53220045 has 48 divisors (see below), whose sum is σ = 93965760. Its totient is φ = 25648128.

The previous prime is 53220029. The next prime is 53220053. The reversal of 53220045 is 54002235.

It is not a de Polignac number, because 53220045 - 2⁴ = 53220029 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150589 + ... + 150941.

It is an arithmetic number, because the mean of its divisors is an integer number (1957620).

Almost surely, 2^53220045 is an apocalyptic number.

It is an amenable number.

53220045 is a deficient number, since it is larger than the sum of its proper divisors (40745715).

53220045 is a wasteful number, since it uses less digits than its factorization.

53220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 53220045 is about 7295.2069881532. The cubic root of 53220045 is about 376.1477016103.

The spelling of 53220045 in words is "fifty-three million, two hundred twenty thousand, forty-five".