634055531 has 2 divisors, whose sum is σ = 634055532. Its totient is φ = 634055530.

The previous prime is 634055473. The next prime is 634055549. The reversal of 634055531 is 135550436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634055531 is a prime.

It is a super-2 number, since 2×634055531² = 804052832783383922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634015531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317027765 + 317027766.

It is an arithmetic number, because the mean of its divisors is an integer number (317027766).

Almost surely, 2^634055531 is an apocalyptic number.

634055531 is a deficient number, since it is larger than the sum of its proper divisors (1).

634055531 is an equidigital number, since it uses as much as digits as its factorization.

634055531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 634055531 is about 25180.4593087577. The cubic root of 634055531 is about 859.0974536205.

The spelling of 634055531 in words is "six hundred thirty-four million, fifty-five thousand, five hundred thirty-one".