40787451 has 6 divisors (see below), whose sum is σ = 58915220. Its totient is φ = 27191628.

The previous prime is 40787429. The next prime is 40787459. The reversal of 40787451 is 15478704.

It is not a de Polignac number, because 40787451 - 2⁶ = 40787387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40787459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2265961 + ... + 2265978.

Almost surely, 2^40787451 is an apocalyptic number.

40787451 is a deficient number, since it is larger than the sum of its proper divisors (18127769).

40787451 is a wasteful number, since it uses less digits than its factorization.

40787451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531945 (or 4531942 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 40787451 is about 6386.5053824451. The cubic root of 40787451 is about 344.2248254256.

The spelling of 40787451 in words is "forty million, seven hundred eighty-seven thousand, four hundred fifty-one".