61251256 has 32 divisors (see below), whose sum is σ = 125783280. Its totient is φ = 27731200.

The previous prime is 61251251. The next prime is 61251287. The reversal of 61251256 is 65215216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61251251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23490 + ... + 25966.

Almost surely, 2^61251256 is an apocalyptic number.

It is an amenable number.

61251256 is an abundant number, since it is smaller than the sum of its proper divisors (64532024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61251256 is a wasteful number, since it uses less digits than its factorization.

61251256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775 (or 2771 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 61251256 is about 7826.3181637345. The cubic root of 61251256 is about 394.1894525508.

It can be divided in two parts, 6125 and 1256, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 61251256 in words is "sixty-one million, two hundred fifty-one thousand, two hundred fifty-six".