45420253 has 4 divisors (see below), whose sum is σ = 45448000. Its totient is φ = 45392508.

The previous prime is 45420247. The next prime is 45420269. The reversal of 45420253 is 35202454.

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 45420253 - 2⁹ = 45419741 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 (45420223) 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, 11253 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (11362000).

Almost surely, 2^45420253 is an apocalyptic number.

It is an amenable number.

45420253 is a deficient number, since it is larger than the sum of its proper divisors (27747).

45420253 is a wasteful number, since it uses less digits than its factorization.

45420253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 45420253 is about 6739.4549482877. The cubic root of 45420253 is about 356.7931569677.

The spelling of 45420253 in words is "forty-five million, four hundred twenty thousand, two hundred fifty-three".