73113551 has 8 divisors (see below), whose sum is σ = 83779584. Its totient is φ = 62502840.

The previous prime is 73113511. The next prime is 73113559. The reversal of 73113551 is 15531137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73113551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73113551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73113559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10955 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (10472448).

Almost surely, 2^73113551 is an apocalyptic number.

73113551 is a deficient number, since it is larger than the sum of its proper divisors (10666033).

73113551 is a wasteful number, since it uses less digits than its factorization.

73113551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27661.

The product of its digits is 1575, while the sum is 26.

The square root of 73113551 is about 8550.6462328879. The cubic root of 73113551 is about 418.1505051610.

Adding to 73113551 its reverse (15531137), we get a palindrome (88644688).

The spelling of 73113551 in words is "seventy-three million, one hundred thirteen thousand, five hundred fifty-one".