551631371 has 2 divisors, whose sum is σ = 551631372. Its totient is φ = 551631370.

The previous prime is 551631277. The next prime is 551631403. The reversal of 551631371 is 173136155.

It is an a-pointer prime, because the next prime (551631403) can be obtained adding 551631371 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551631371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551631271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275815685 + 275815686.

It is an arithmetic number, because the mean of its divisors is an integer number (275815686).

Almost surely, 2^551631371 is an apocalyptic number.

551631371 is a deficient number, since it is larger than the sum of its proper divisors (1).

551631371 is an equidigital number, since it uses as much as digits as its factorization.

551631371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 32.

The square root of 551631371 is about 23486.8339926862. The cubic root of 551631371 is about 820.1305418781.

The spelling of 551631371 in words is "five hundred fifty-one million, six hundred thirty-one thousand, three hundred seventy-one".