73001261 has 4 divisors (see below), whose sum is σ = 73053024. Its totient is φ = 72949500.

The previous prime is 73001237. The next prime is 73001263. The reversal of 73001261 is 16210037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73001261 - 2¹⁰ = 73000237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73001263) 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, 23705 + ... + 26606.

It is an arithmetic number, because the mean of its divisors is an integer number (18263256).

Almost surely, 2^73001261 is an apocalyptic number.

It is an amenable number.

73001261 is a deficient number, since it is larger than the sum of its proper divisors (51763).

73001261 is a wasteful number, since it uses less digits than its factorization.

73001261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51762.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 73001261 is about 8544.0775394422. The cubic root of 73001261 is about 417.9363260840.

Adding to 73001261 its reverse (16210037), we get a palindrome (89211298).

The spelling of 73001261 in words is "seventy-three million, one thousand, two hundred sixty-one".