40620253 has 4 divisors (see below), whose sum is σ = 40652640. Its totient is φ = 40587868.

The previous prime is 40620247. The next prime is 40620263. The reversal of 40620253 is 35202604.

It is a happy number.

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 40620253 - 2⁹ = 40619741 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 (40620263) 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, 14233 + ... + 16846.

It is an arithmetic number, because the mean of its divisors is an integer number (10163160).

Almost surely, 2^40620253 is an apocalyptic number.

It is an amenable number.

40620253 is a deficient number, since it is larger than the sum of its proper divisors (32387).

40620253 is a wasteful number, since it uses less digits than its factorization.

40620253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32386.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40620253 is about 6373.4019957947. The cubic root of 40620253 is about 343.7538266020.

Adding to 40620253 its reverse (35202604), we get a palindrome (75822857).

The spelling of 40620253 in words is "forty million, six hundred twenty thousand, two hundred fifty-three".