40557235 has 4 divisors (see below), whose sum is σ = 48668688. Its totient is φ = 32445784.

The previous prime is 40557221. The next prime is 40557271. The reversal of 40557235 is 53275504.

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

It is a cyclic number.

It is not a de Polignac number, because 40557235 - 2⁷ = 40557107 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40557197 and 40557206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055719 + ... + 4055728.

It is an arithmetic number, because the mean of its divisors is an integer number (12167172).

Almost surely, 2^40557235 is an apocalyptic number.

40557235 is a deficient number, since it is larger than the sum of its proper divisors (8111453).

40557235 is an equidigital number, since it uses as much as digits as its factorization.

40557235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8111452.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 40557235 is about 6368.4562493590. The cubic root of 40557235 is about 343.5759687671.

The spelling of 40557235 in words is "forty million, five hundred fifty-seven thousand, two hundred thirty-five".