254657961 has 12 divisors (see below), whose sum is σ = 380523780. Its totient is φ = 163917600.

The previous prime is 254657957. The next prime is 254657999. The reversal of 254657961 is 169756452.

It can be written as a sum of positive squares in 2 ways, for example, as 205377561 + 49280400 = 14331^2 + 7020^2 .

It is not a de Polignac number, because 254657961 - 2² = 254657957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254657941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487590 + ... + 488111.

It is an arithmetic number, because the mean of its divisors is an integer number (31710315).

Almost surely, 2^254657961 is an apocalyptic number.

It is an amenable number.

254657961 is a deficient number, since it is larger than the sum of its proper divisors (125865819).

254657961 is a wasteful number, since it uses less digits than its factorization.

254657961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975736 (or 975733 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 254657961 is about 15958.0061724515. The cubic root of 254657961 is about 633.8489167870.

The spelling of 254657961 in words is "two hundred fifty-four million, six hundred fifty-seven thousand, nine hundred sixty-one".