551141631 has 16 divisors (see below), whose sum is σ = 821521920. Its totient is φ = 365170680.

The previous prime is 551141611. The next prime is 551141659. The reversal of 551141631 is 136141155.

It is not a de Polignac number, because 551141631 - 2¹⁰ = 551140607 is a prime.

It is a super-2 number, since 2×551141631² = 607514194842680322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 551141595 and 551141604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551141611) 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, 58215 + ... + 67016.

It is an arithmetic number, because the mean of its divisors is an integer number (51345120).

Almost surely, 2^551141631 is an apocalyptic number.

551141631 is a deficient number, since it is larger than the sum of its proper divisors (270380289).

551141631 is a wasteful number, since it uses less digits than its factorization.

551141631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125403 (or 125397 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 551141631 is about 23476.4058364989. The cubic root of 551141631 is about 819.8877652259.

Adding to 551141631 its reverse (136141155), we get a palindrome (687282786).

The spelling of 551141631 in words is "five hundred fifty-one million, one hundred forty-one thousand, six hundred thirty-one".