40755861 has 6 divisors (see below), whose sum is σ = 58869590. Its totient is φ = 27170568.

The previous prime is 40755857. The next prime is 40755877. The reversal of 40755861 is 16855704.

40755861 is a `hidden beast` number, since 4 + 0 + 75 + 586 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 15444900 = 5031^2 + 3930^2 .

It is not a de Polignac number, because 40755861 - 2² = 40755857 is a prime.

It is a super-2 number, since 2×40755861² = 3322080411702642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40755061) 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, 2264206 + ... + 2264223.

Almost surely, 2^40755861 is an apocalyptic number.

It is an amenable number.

40755861 is a deficient number, since it is larger than the sum of its proper divisors (18113729).

40755861 is a wasteful number, since it uses less digits than its factorization.

40755861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528435 (or 4528432 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 40755861 is about 6384.0317198460. The cubic root of 40755861 is about 344.1359347618.

It can be divided in two parts, 40755 and 861, that added together give a triangular number (41616 = T₂₈₈).

The spelling of 40755861 in words is "forty million, seven hundred fifty-five thousand, eight hundred sixty-one".