40561157 has 16 divisors (see below), whose sum is σ = 50746752. Its totient is φ = 31561920.

The previous prime is 40561151. The next prime is 40561159. The reversal of 40561157 is 75116504.

It is not a de Polignac number, because 40561157 - 2⁸ = 40560901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40561151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1898 + ... + 9204.

It is an arithmetic number, because the mean of its divisors is an integer number (3171672).

Almost surely, 2^40561157 is an apocalyptic number.

It is an amenable number.

40561157 is a deficient number, since it is larger than the sum of its proper divisors (10185595).

40561157 is a wasteful number, since it uses less digits than its factorization.

40561157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 40561157 is about 6368.7641658331. The cubic root of 40561157 is about 343.5870433347.

The spelling of 40561157 in words is "forty million, five hundred sixty-one thousand, one hundred fifty-seven".