56493257 has 2 divisors, whose sum is σ = 56493258. Its totient is φ = 56493256.

The previous prime is 56493233. The next prime is 56493277. The reversal of 56493257 is 75239465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44769481 + 11723776 = 6691^2 + 3424^2 .

It is a cyclic number.

It is not a de Polignac number, because 56493257 - 2⁸ = 56493001 is a prime.

It is a super-3 number, since 3×56493257³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56493277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28246628 + 28246629.

It is an arithmetic number, because the mean of its divisors is an integer number (28246629).

Almost surely, 2^56493257 is an apocalyptic number.

It is an amenable number.

56493257 is a deficient number, since it is larger than the sum of its proper divisors (1).

56493257 is an equidigital number, since it uses as much as digits as its factorization.

56493257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 56493257 is about 7516.1996381150. The cubic root of 56493257 is about 383.7062482348.

The spelling of 56493257 in words is "fifty-six million, four hundred ninety-three thousand, two hundred fifty-seven".