45505020 has 48 divisors (see below), whose sum is σ = 138999168. Its totient is φ = 11031360.

The previous prime is 45505013. The next prime is 45505069. The reversal of 45505020 is 2050554.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33814 + ... + 35133.

It is an arithmetic number, because the mean of its divisors is an integer number (2895816).

Almost surely, 2^45505020 is an apocalyptic number.

It is an amenable number.

45505020 is an abundant number, since it is smaller than the sum of its proper divisors (93494148).

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

45505020 is a wasteful number, since it uses less digits than its factorization.

45505020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68970 (or 68968 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 45505020 is about 6745.7408785099. The cubic root of 45505020 is about 357.0149779120.

Adding to 45505020 its reverse (2050554), we get a palindrome (47555574).

The spelling of 45505020 in words is "forty-five million, five hundred five thousand, twenty".