40254457 has 4 divisors (see below), whose sum is σ = 40298356. Its totient is φ = 40210560.

The previous prime is 40254443. The next prime is 40254469. The reversal of 40254457 is 75445204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 37100281 = 1776^2 + 6091^2 .

It is a cyclic number.

It is not a de Polignac number, because 40254457 - 2¹⁹ = 39730169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40254427) 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, 20544 + ... + 22417.

It is an arithmetic number, because the mean of its divisors is an integer number (10074589).

Almost surely, 2^40254457 is an apocalyptic number.

It is an amenable number.

40254457 is a deficient number, since it is larger than the sum of its proper divisors (43899).

40254457 is an equidigital number, since it uses as much as digits as its factorization.

40254457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43898.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 40254457 is about 6344.6400213093. The cubic root of 40254457 is about 342.7188492441.

The spelling of 40254457 in words is "forty million, two hundred fifty-four thousand, four hundred fifty-seven".