251154461 has 2 divisors, whose sum is σ = 251154462. Its totient is φ = 251154460.

The previous prime is 251154451. The next prime is 251154469. The reversal of 251154461 is 164451152.

251154461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183602500 + 67551961 = 13550^2 + 8219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251154461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251154469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125577230 + 125577231.

It is an arithmetic number, because the mean of its divisors is an integer number (125577231).

Almost surely, 2^251154461 is an apocalyptic number.

It is an amenable number.

251154461 is a deficient number, since it is larger than the sum of its proper divisors (1).

251154461 is an equidigital number, since it uses as much as digits as its factorization.

251154461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 251154461 is about 15847.8535139621. The cubic root of 251154461 is about 630.9287226215.

The spelling of 251154461 in words is "two hundred fifty-one million, one hundred fifty-four thousand, four hundred sixty-one".