955135921 has 2 divisors, whose sum is σ = 955135922. Its totient is φ = 955135920.

The previous prime is 955135913. The next prime is 955135931. The reversal of 955135921 is 129531559.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 785120400 + 170015521 = 28020^2 + 13039^2 .

It is a cyclic number.

It is not a de Polignac number, because 955135921 - 2³ = 955135913 is a prime.

It is not a weakly prime, because it can be changed into another prime (955135901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477567960 + 477567961.

It is an arithmetic number, because the mean of its divisors is an integer number (477567961).

Almost surely, 2^955135921 is an apocalyptic number.

It is an amenable number.

955135921 is a deficient number, since it is larger than the sum of its proper divisors (1).

955135921 is an equidigital number, since it uses as much as digits as its factorization.

955135921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60750, while the sum is 40.

The square root of 955135921 is about 30905.2733526173. The cubic root of 955135921 is about 984.8159175697.

The spelling of 955135921 in words is "nine hundred fifty-five million, one hundred thirty-five thousand, nine hundred twenty-one".