551220355 has 24 divisors (see below), whose sum is σ = 770484960. Its totient is φ = 377475840.

The previous prime is 551220349. The next prime is 551220361. The reversal of 551220355 is 553022155.

It is an interprime number because it is at equal distance from previous prime (551220349) and next prime (551220361).

It is not a de Polignac number, because 551220355 - 2⁷ = 551220227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364050 + ... + 365560.

It is an arithmetic number, because the mean of its divisors is an integer number (32103540).

Almost surely, 2^551220355 is an apocalyptic number.

551220355 is a deficient number, since it is larger than the sum of its proper divisors (219264605).

551220355 is a wasteful number, since it uses less digits than its factorization.

551220355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019 (or 3012 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 551220355 is about 23478.0824387342. The cubic root of 551220355 is about 819.9268004260.

The spelling of 551220355 in words is "five hundred fifty-one million, two hundred twenty thousand, three hundred fifty-five".