73236257 has 4 divisors (see below), whose sum is σ = 73920816. Its totient is φ = 72551700.

The previous prime is 73236253. The next prime is 73236259. The reversal of 73236257 is 75263237.

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 73236257 - 2² = 73236253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73236253) 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, 342119 + ... + 342332.

It is an arithmetic number, because the mean of its divisors is an integer number (18480204).

Almost surely, 2^73236257 is an apocalyptic number.

It is an amenable number.

73236257 is a deficient number, since it is larger than the sum of its proper divisors (684559).

73236257 is a wasteful number, since it uses less digits than its factorization.

73236257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684558.

The product of its digits is 52920, while the sum is 35.

The square root of 73236257 is about 8557.8184720173. The cubic root of 73236257 is about 418.3843008470.

The spelling of 73236257 in words is "seventy-three million, two hundred thirty-six thousand, two hundred fifty-seven".