251013151 has 2 divisors, whose sum is σ = 251013152. Its totient is φ = 251013150.

The previous prime is 251013127. The next prime is 251013173. The reversal of 251013151 is 151310152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251013151 - 2⁷ = 251013023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251013101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125506575 + 125506576.

It is an arithmetic number, because the mean of its divisors is an integer number (125506576).

Almost surely, 2^251013151 is an apocalyptic number.

251013151 is a deficient number, since it is larger than the sum of its proper divisors (1).

251013151 is an equidigital number, since it uses as much as digits as its factorization.

251013151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 251013151 is about 15843.3945541983. The cubic root of 251013151 is about 630.8103714632.

It can be divided in two parts, 25 and 1013151, that added together give a triangular number (1013176 = T₁₄₂₃).

The spelling of 251013151 in words is "two hundred fifty-one million, thirteen thousand, one hundred fifty-one".