251334361 has 2 divisors, whose sum is σ = 251334362. Its totient is φ = 251334360.

The previous prime is 251334319. The next prime is 251334371. The reversal of 251334361 is 163433152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226683136 + 24651225 = 15056^2 + 4965^2 .

It is a cyclic number.

It is not a de Polignac number, because 251334361 - 2⁷ = 251334233 is a prime.

It is a super-2 number, since 2×251334361² = 126337922038556642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (251334311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125667180 + 125667181.

It is an arithmetic number, because the mean of its divisors is an integer number (125667181).

Almost surely, 2^251334361 is an apocalyptic number.

It is an amenable number.

251334361 is a deficient number, since it is larger than the sum of its proper divisors (1).

251334361 is an equidigital number, since it uses as much as digits as its factorization.

251334361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 251334361 is about 15853.5283454504. The cubic root of 251334361 is about 631.0793297907.

It can be divided in two parts, 251334 and 361, that added together give a triangular number (251695 = T₇₀₉).

The spelling of 251334361 in words is "two hundred fifty-one million, three hundred thirty-four thousand, three hundred sixty-one".