40951566 has 48 divisors (see below), whose sum is σ = 91641264. Its totient is φ = 13208832.

The previous prime is 40951553. The next prime is 40951571. The reversal of 40951566 is 66515904.

40951566 is a `hidden beast` number, since 4 + 0 + 95 + 1 + 566 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40951566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121350 + ... + 121686.

It is an arithmetic number, because the mean of its divisors is an integer number (1909193).

Almost surely, 2^40951566 is an apocalyptic number.

40951566 is an abundant number, since it is smaller than the sum of its proper divisors (50689698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40951566 is a wasteful number, since it uses less digits than its factorization.

40951566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 40951566 is about 6399.3410598280. The cubic root of 40951566 is about 344.6858892730.

The spelling of 40951566 in words is "forty million, nine hundred fifty-one thousand, five hundred sixty-six".