40057655 has 24 divisors (see below), whose sum is σ = 53619216. Its totient is φ = 28702080.

The previous prime is 40057649. The next prime is 40057727. The reversal of 40057655 is 55675004.

40057655 = T₂₇₄ + T₂₇₅ + ... + T₆₃₈.

40057655 = 1141² + 1142² + ... + 1170².

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-40057655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43712 + ... + 44618.

It is an arithmetic number, because the mean of its divisors is an integer number (2234134).

Almost surely, 2^40057655 is an apocalyptic number.

40057655 is a deficient number, since it is larger than the sum of its proper divisors (13561561).

40057655 is a wasteful number, since it uses less digits than its factorization.

40057655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 40057655 is about 6329.1117070249. Note that the first 3 decimals coincide. The cubic root of 40057655 is about 342.1594248909.

The spelling of 40057655 in words is "forty million, fifty-seven thousand, six hundred fifty-five".