40253357 has 4 divisors (see below), whose sum is σ = 40266396. Its totient is φ = 40240320.

The previous prime is 40253347. The next prime is 40253359. The reversal of 40253357 is 75335204.

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 can be written as a sum of positive squares in 2 ways, for example, as 30680521 + 9572836 = 5539^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 40253357 - 2¹⁶ = 40187821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40253359) 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, 1013 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (10066599).

Almost surely, 2^40253357 is an apocalyptic number.

It is an amenable number.

40253357 is a deficient number, since it is larger than the sum of its proper divisors (13039).

40253357 is an equidigital number, since it uses as much as digits as its factorization.

40253357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13038.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 40253357 is about 6344.5533333719. The cubic root of 40253357 is about 342.7157274848.

The spelling of 40253357 in words is "forty million, two hundred fifty-three thousand, three hundred fifty-seven".