1621424552 has 32 divisors (see below), whose sum is σ = 3320654400. Its totient is φ = 736099200.

The previous prime is 1621424533. The next prime is 1621424557. The reversal of 1621424552 is 2554241261.

It is not an unprimeable number, because it can be changed into a prime (1621424557) 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, 62852 + ... + 84812.

It is an arithmetic number, because the mean of its divisors is an integer number (103770450).

Almost surely, 2^1621424552 is an apocalyptic number.

It is an amenable number.

1621424552 is an abundant number, since it is smaller than the sum of its proper divisors (1699229848).

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

1621424552 is a wasteful number, since it uses less digits than its factorization.

1621424552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22817 (or 22813 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 1621424552 is about 40266.9163458043. The cubic root of 1621424552 is about 1174.8044465870.

The spelling of 1621424552 in words is "one billion, six hundred twenty-one million, four hundred twenty-four thousand, five hundred fifty-two".