40611257 has 2 divisors, whose sum is σ = 40611258. Its totient is φ = 40611256.

The previous prime is 40611251. The next prime is 40611269. The reversal of 40611257 is 75211604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 212521 = 6356^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 40611257 - 2⁸ = 40611001 is a prime.

It is not a weakly prime, because it can be changed into another prime (40611251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20305628 + 20305629.

It is an arithmetic number, because the mean of its divisors is an integer number (20305629).

Almost surely, 2^40611257 is an apocalyptic number.

It is an amenable number.

40611257 is a deficient number, since it is larger than the sum of its proper divisors (1).

40611257 is an equidigital number, since it uses as much as digits as its factorization.

40611257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 40611257 is about 6372.6962111809. The cubic root of 40611257 is about 343.7284481474.

The spelling of 40611257 in words is "forty million, six hundred eleven thousand, two hundred fifty-seven".