40831551 has 12 divisors (see below), whose sum is σ = 62083320. Its totient is φ = 25788240.

The previous prime is 40831547. The next prime is 40831559. The reversal of 40831551 is 15513804.

It is not a de Polignac number, because 40831551 - 2² = 40831547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119220 + ... + 119561.

It is an arithmetic number, because the mean of its divisors is an integer number (5173610).

Almost surely, 2^40831551 is an apocalyptic number.

40831551 is a deficient number, since it is larger than the sum of its proper divisors (21251769).

40831551 is a wasteful number, since it uses less digits than its factorization.

40831551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238806 (or 238803 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 40831551 is about 6389.9570421091. The cubic root of 40831551 is about 344.3488410779.

The spelling of 40831551 in words is "forty million, eight hundred thirty-one thousand, five hundred fifty-one".