40555451 has 4 divisors (see below), whose sum is σ = 40568400. Its totient is φ = 40542504.

The previous prime is 40555433. The next prime is 40555453. The reversal of 40555451 is 15455504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40555451 - 2¹⁰ = 40554427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40555453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1490 + ... + 9128.

It is an arithmetic number, because the mean of its divisors is an integer number (10142100).

Almost surely, 2^40555451 is an apocalyptic number.

40555451 is a deficient number, since it is larger than the sum of its proper divisors (12949).

40555451 is an equidigital number, since it uses as much as digits as its factorization.

40555451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12948.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 40555451 is about 6368.3161824771. The cubic root of 40555451 is about 343.5709310427.

The spelling of 40555451 in words is "forty million, five hundred fifty-five thousand, four hundred fifty-one".