57106949 has 2 divisors, whose sum is σ = 57106950. Its totient is φ = 57106948.

The previous prime is 57106909. The next prime is 57106969. The reversal of 57106949 is 94960175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49098049 + 8008900 = 7007^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 57106949 - 2²⁴ = 40329733 is a prime.

It is a super-2 number, since 2×57106949² = 6522407248177202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57106909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28553474 + 28553475.

It is an arithmetic number, because the mean of its divisors is an integer number (28553475).

Almost surely, 2^57106949 is an apocalyptic number.

It is an amenable number.

57106949 is a deficient number, since it is larger than the sum of its proper divisors (1).

57106949 is an equidigital number, since it uses as much as digits as its factorization.

57106949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 57106949 is about 7556.9139865424. The cubic root of 57106949 is about 385.0906606081.

The spelling of 57106949 in words is "fifty-seven million, one hundred six thousand, nine hundred forty-nine".