537921257 has 4 divisors (see below), whose sum is σ = 544402320. Its totient is φ = 531440196.

The previous prime is 537921193. The next prime is 537921283. The reversal of 537921257 is 752129735.

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 537921257 - 2⁶ = 537921193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537921287) 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, 3240407 + ... + 3240572.

It is an arithmetic number, because the mean of its divisors is an integer number (136100580).

Almost surely, 2^537921257 is an apocalyptic number.

It is an amenable number.

537921257 is a deficient number, since it is larger than the sum of its proper divisors (6481063).

537921257 is an equidigital number, since it uses as much as digits as its factorization.

537921257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481062.

The product of its digits is 132300, while the sum is 41.

The square root of 537921257 is about 23193.1295214768. The cubic root of 537921257 is about 813.2790196904.

The spelling of 537921257 in words is "five hundred thirty-seven million, nine hundred twenty-one thousand, two hundred fifty-seven".