40295257 has 24 divisors (see below), whose sum is σ = 46037760. Its totient is φ = 35108640.

The previous prime is 40295249. The next prime is 40295267. The reversal of 40295257 is 75259204.

It is not a de Polignac number, because 40295257 - 2³ = 40295249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40295267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 937078 + ... + 937120.

It is an arithmetic number, because the mean of its divisors is an integer number (1918240).

Almost surely, 2^40295257 is an apocalyptic number.

It is an amenable number.

40295257 is a deficient number, since it is larger than the sum of its proper divisors (5742503).

40295257 is a wasteful number, since it uses less digits than its factorization.

40295257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 40295257 is about 6347.8545194420. The cubic root of 40295257 is about 342.8345979802.

It can be divided in two parts, 402 and 95257, that added together give a palindrome (95659).

The spelling of 40295257 in words is "forty million, two hundred ninety-five thousand, two hundred fifty-seven".