61374251 has 2 divisors, whose sum is σ = 61374252. Its totient is φ = 61374250.

The previous prime is 61374241. The next prime is 61374263. The reversal of 61374251 is 15247316.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61374251 is a prime.

It is a super-2 number, since 2×61374251² = 7533597371622002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61374241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30687125 + 30687126.

It is an arithmetic number, because the mean of its divisors is an integer number (30687126).

Almost surely, 2^61374251 is an apocalyptic number.

61374251 is a deficient number, since it is larger than the sum of its proper divisors (1).

61374251 is an equidigital number, since it uses as much as digits as its factorization.

61374251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 61374251 is about 7834.1720047494. The cubic root of 61374251 is about 394.4531255967.

The spelling of 61374251 in words is "sixty-one million, three hundred seventy-four thousand, two hundred fifty-one".