40015253 has 4 divisors (see below), whose sum is σ = 40092288. Its totient is φ = 39938220.

The previous prime is 40015249. The next prime is 40015259. The reversal of 40015253 is 35251004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40015253 - 2² = 40015249 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 (40015259) 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, 37733 + ... + 38778.

It is an arithmetic number, because the mean of its divisors is an integer number (10023072).

Almost surely, 2^40015253 is an apocalyptic number.

It is an amenable number.

40015253 is a deficient number, since it is larger than the sum of its proper divisors (77035).

40015253 is an equidigital number, since it uses as much as digits as its factorization.

40015253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77034.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40015253 is about 6325.7610609317. The cubic root of 40015253 is about 342.0386542496.

Adding to 40015253 its reverse (35251004), we get a palindrome (75266257).

The spelling of 40015253 in words is "forty million, fifteen thousand, two hundred fifty-three".