551049144621 has 16 divisors (see below), whose sum is σ = 777288768000. Its totient is φ = 346282131888.

The previous prime is 551049144617. The next prime is 551049144631. The reversal of 551049144621 is 126441940155.

It is not a de Polignac number, because 551049144621 - 2² = 551049144617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551049144631) 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, 24278931 + ... + 24301616.

It is an arithmetic number, because the mean of its divisors is an integer number (48580548000).

Almost surely, 2^551049144621 is an apocalyptic number.

It is an amenable number.

551049144621 is a deficient number, since it is larger than the sum of its proper divisors (226239623379).

551049144621 is a wasteful number, since it uses less digits than its factorization.

551049144621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48580768.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 551049144621 in words is "five hundred fifty-one billion, forty-nine million, one hundred forty-four thousand, six hundred twenty-one".