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73134541 = 531379897
BaseRepresentation
bin1000101101111…
…11000111001101
312002121121201201
410112333013031
5122210301131
611131305501
71545430144
oct426770715
9162547651
1073134541
1138312077
12205ab291
13121c849c
1499da75b
156649761
hex45bf1cd

73134541 has 4 divisors (see below), whose sum is σ = 74514492. Its totient is φ = 71754592.

The previous prime is 73134521. The next prime is 73134557. The reversal of 73134541 is 14543137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14543137 = 72077591.

It can be written as a sum of positive squares in 2 ways, for example, as 54081316 + 19053225 = 7354^2 + 4365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-73134541 is a prime.

It is a super-2 number, since 2×731345412 = 10697322174561362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73134511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689896 + ... + 690001.

It is an arithmetic number, because the mean of its divisors is an integer number (18628623).

Almost surely, 273134541 is an apocalyptic number.

It is an amenable number.

73134541 is a deficient number, since it is larger than the sum of its proper divisors (1379951).

73134541 is a wasteful number, since it uses less digits than its factorization.

73134541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379950.

The product of its digits is 5040, while the sum is 28.

The square root of 73134541 is about 8551.8735374186. The cubic root of 73134541 is about 418.1905166189.

Adding to 73134541 its reverse (14543137), we get a palindrome (87677678).

The spelling of 73134541 in words is "seventy-three million, one hundred thirty-four thousand, five hundred forty-one".

Divisors: 1 53 1379897 73134541