551020562651 has 4 divisors (see below), whose sum is σ = 593406759792. Its totient is φ = 508634365512.

The previous prime is 551020562591. The next prime is 551020562669. The reversal of 551020562651 is 156265020155.

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

It is not a de Polignac number, because 551020562651 - 2²² = 551016368347 is a prime.

It is a super-2 number, since 2×551020562651² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551020262651) 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, 21193098551 + ... + 21193098576.

It is an arithmetic number, because the mean of its divisors is an integer number (148351689948).

Almost surely, 2^551020562651 is an apocalyptic number.

551020562651 is a deficient number, since it is larger than the sum of its proper divisors (42386197141).

551020562651 is a wasteful number, since it uses less digits than its factorization.

551020562651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42386197140.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 551020562651 in words is "five hundred fifty-one billion, twenty million, five hundred sixty-two thousand, six hundred fifty-one".