551979001 has 16 divisors (see below), whose sum is σ = 696985344. Its totient is φ = 425931264.

The previous prime is 551978989. The next prime is 551979017. The reversal of 551979001 is 100979155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 551979001 - 2¹⁷ = 551847929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551979041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98100 + ... + 103573.

It is an arithmetic number, because the mean of its divisors is an integer number (43561584).

Almost surely, 2^551979001 is an apocalyptic number.

It is an amenable number.

551979001 is a deficient number, since it is larger than the sum of its proper divisors (145006343).

551979001 is a wasteful number, since it uses less digits than its factorization.

551979001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201720.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 551979001 is about 23494.2333562941. The cubic root of 551979001 is about 820.3027837816.

The spelling of 551979001 in words is "five hundred fifty-one million, nine hundred seventy-nine thousand, one".