40555761 has 8 divisors (see below), whose sum is σ = 57255264. Its totient is φ = 25446720.

The previous prime is 40555741. The next prime is 40555763. The reversal of 40555761 is 16755504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40555761 - 2¹³ = 40547569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40555763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397555 + ... + 397656.

It is an arithmetic number, because the mean of its divisors is an integer number (7156908).

Almost surely, 2^40555761 is an apocalyptic number.

It is an amenable number.

40555761 is a deficient number, since it is larger than the sum of its proper divisors (16699503).

40555761 is a wasteful number, since it uses less digits than its factorization.

40555761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795231.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 40555761 is about 6368.3405216744. The cubic root of 40555761 is about 343.5718064427.

The spelling of 40555761 in words is "forty million, five hundred fifty-five thousand, seven hundred sixty-one".