40657455 has 24 divisors (see below), whose sum is σ = 74619792. Its totient is φ = 20408064.

The previous prime is 40657447. The next prime is 40657457. The reversal of 40657455 is 55475604.

40657455 = T₁₇₀ + T₁₇₁ + ... + T₆₂₈.

It is a happy number.

40657455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40657455 - 2³ = 40657447 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40657457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25809 + ... + 27338.

It is an arithmetic number, because the mean of its divisors is an integer number (3109158).

Almost surely, 2^40657455 is an apocalyptic number.

40657455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40657455 is a deficient number, since it is larger than the sum of its proper divisors (33962337).

40657455 is a wasteful number, since it uses less digits than its factorization.

40657455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53175 (or 53172 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 40657455 is about 6376.3198633695. The cubic root of 40657455 is about 343.8587367297.

The spelling of 40657455 in words is "forty million, six hundred fifty-seven thousand, four hundred fifty-five".