40451871 has 32 divisors (see below), whose sum is σ = 58705920. Its totient is φ = 24710400.

The previous prime is 40451867. The next prime is 40451881. The reversal of 40451871 is 17815404.

It is not a de Polignac number, because 40451871 - 2² = 40451867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223401 + ... + 223581.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^40451871 is an apocalyptic number.

40451871 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40451871 is a deficient number, since it is larger than the sum of its proper divisors (18254049).

40451871 is a wasteful number, since it uses less digits than its factorization.

40451871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 40451871 is about 6360.1785352300. The cubic root of 40451871 is about 343.2781843951.

The spelling of 40451871 in words is "forty million, four hundred fifty-one thousand, eight hundred seventy-one".