551057420 has 24 divisors (see below), whose sum is σ = 1197126000. Its totient is φ = 212821952.

The previous prime is 551057413. The next prime is 551057443. The reversal of 551057420 is 24750155.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474470 + ... + 475629.

It is an arithmetic number, because the mean of its divisors is an integer number (49880250).

Almost surely, 2^551057420 is an apocalyptic number.

It is an amenable number.

551057420 is an abundant number, since it is smaller than the sum of its proper divisors (646068580).

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

551057420 is a wasteful number, since it uses less digits than its factorization.

551057420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950137 (or 950135 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 551057420 is about 23474.6122438689. The cubic root of 551057420 is about 819.8460051885.

The spelling of 551057420 in words is "five hundred fifty-one million, fifty-seven thousand, four hundred twenty".