73057531 has 8 divisors (see below), whose sum is σ = 75348000. Its totient is φ = 70791360.

The previous prime is 73057507. The next prime is 73057553. The reversal of 73057531 is 13575037.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 73057531 - 2¹¹ = 73055483 is a prime.

It is a super-2 number, since 2×73057531² = 10674805671631922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73057493 and 73057502.

It is not an unprimeable number, because it can be changed into a prime (73057561) 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, 130 + ... + 12088.

It is an arithmetic number, because the mean of its divisors is an integer number (9418500).

Almost surely, 2^73057531 is an apocalyptic number.

73057531 is the 3823-rd centered decagonal number.

73057531 is a deficient number, since it is larger than the sum of its proper divisors (2290469).

73057531 is a wasteful number, since it uses less digits than its factorization.

73057531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12149.

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 73057531 is about 8547.3698293686. The cubic root of 73057531 is about 418.0436814771.

The spelling of 73057531 in words is "seventy-three million, fifty-seven thousand, five hundred thirty-one".