40155051 has 4 divisors (see below), whose sum is σ = 53540072. Its totient is φ = 26770032.

The previous prime is 40155047. The next prime is 40155097. The reversal of 40155051 is 15055104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40155051 - 2² = 40155047 is a prime.

It is a super-2 number, since 2×40155051² = 3224856241625202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40155041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6692506 + ... + 6692511.

It is an arithmetic number, because the mean of its divisors is an integer number (13385018).

Almost surely, 2^40155051 is an apocalyptic number.

40155051 is a deficient number, since it is larger than the sum of its proper divisors (13385021).

40155051 is a wasteful number, since it uses less digits than its factorization.

40155051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13385020.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 40155051 is about 6336.8013224339. The cubic root of 40155051 is about 342.4365087346.

The spelling of 40155051 in words is "forty million, one hundred fifty-five thousand, fifty-one".