551652420 has 96 divisors (see below), whose sum is σ = 1697625216. Its totient is φ = 132736000.

The previous prime is 551652383. The next prime is 551652421. The reversal of 551652420 is 24256155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (551652421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87370 + ... + 93470.

It is an arithmetic number, because the mean of its divisors is an integer number (17683596).

Almost surely, 2^551652420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551652420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848812608).

551652420 is an abundant number, since it is smaller than the sum of its proper divisors (1145972796).

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

551652420 is a wasteful number, since it uses less digits than its factorization.

551652420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261 (or 6259 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 551652420 is about 23487.2820905272. The cubic root of 551652420 is about 820.1409731849.

The spelling of 551652420 in words is "five hundred fifty-one million, six hundred fifty-two thousand, four hundred twenty".