40157555 has 12 divisors (see below), whose sum is σ = 49841472. Its totient is φ = 31028640.

The previous prime is 40157549. The next prime is 40157567. The reversal of 40157555 is 55575104.

It is not a de Polignac number, because 40157555 - 2¹⁰ = 40156531 is a prime.

It is a super-2 number, since 2×40157555² = 3225258447156050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78641 + ... + 79149.

It is an arithmetic number, because the mean of its divisors is an integer number (4153456).

Almost surely, 2^40157555 is an apocalyptic number.

40157555 is a deficient number, since it is larger than the sum of its proper divisors (9683917).

40157555 is an frugal number, since it uses more digits than its factorization.

40157555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 40157555 is about 6336.9988953763. The cubic root of 40157555 is about 342.4436265042.

The spelling of 40157555 in words is "forty million, one hundred fifty-seven thousand, five hundred fifty-five".