40157570 has 32 divisors (see below), whose sum is σ = 77997168. Its totient is φ = 14829568.

The previous prime is 40157567. The next prime is 40157591. The reversal of 40157570 is 7575104.

It is a Cunningham number, because it is equal to 6337²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 31259281 + 8898289 = 5591^2 + 2983^2 .

It is a super-2 number, since 2×40157570² = 3225260856609800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6782 + ... + 11238.

Almost surely, 2^40157570 is an apocalyptic number.

40157570 is a deficient number, since it is larger than the sum of its proper divisors (37839598).

40157570 is a wasteful number, since it uses less digits than its factorization.

40157570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 40157570 is about 6337.0000789017. Note that the first 4 decimals coincide. The cubic root of 40157570 is about 342.4436691417.

The spelling of 40157570 in words is "forty million, one hundred fifty-seven thousand, five hundred seventy".