551012551 has 4 divisors (see below), whose sum is σ = 583425072. Its totient is φ = 518600032.

The previous prime is 551012543. The next prime is 551012591. The reversal of 551012551 is 155210155.

551012551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551012551 - 2³ = 551012543 is a prime.

It is a super-2 number, since 2×551012551² = 607229662719055202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551012591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16206235 + ... + 16206268.

It is an arithmetic number, because the mean of its divisors is an integer number (145856268).

Almost surely, 2^551012551 is an apocalyptic number.

551012551 is a deficient number, since it is larger than the sum of its proper divisors (32412521).

551012551 is a wasteful number, since it uses less digits than its factorization.

551012551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32412520.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 551012551 is about 23473.6565323769. The cubic root of 551012551 is about 819.8237530193.

The spelling of 551012551 in words is "five hundred fifty-one million, twelve thousand, five hundred fifty-one".