45055420 has 24 divisors (see below), whose sum is σ = 94858848. Its totient is φ = 17976000.

The previous prime is 45055399. The next prime is 45055421. The reversal of 45055420 is 2455054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45055421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5745 + ... + 11095.

It is an arithmetic number, because the mean of its divisors is an integer number (3952452).

Almost surely, 2^45055420 is an apocalyptic number.

It is an amenable number.

45055420 is an abundant number, since it is smaller than the sum of its proper divisors (49803428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45055420 is a wasteful number, since it uses less digits than its factorization.

45055420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781 (or 5779 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 45055420 is about 6712.3334243764. Note that the first 3 decimals coincide. The cubic root of 45055420 is about 355.8352876043.

The spelling of 45055420 in words is "forty-five million, fifty-five thousand, four hundred twenty".