51244860 has 48 divisors (see below), whose sum is σ = 148119552. Its totient is φ = 13224000.

The previous prime is 51244859. The next prime is 51244861. The reversal of 51244860 is 6844215.

It is an interprime number because it is at equal distance from previous prime (51244859) and next prime (51244861).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51244861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11916 + ... + 15635.

It is an arithmetic number, because the mean of its divisors is an integer number (3085824).

Almost surely, 2^51244860 is an apocalyptic number.

It is an amenable number.

51244860 is an abundant number, since it is smaller than the sum of its proper divisors (96874692).

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

51244860 is a wasteful number, since it uses less digits than its factorization.

51244860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27594 (or 27592 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 51244860 is about 7158.5515294646. The cubic root of 51244860 is about 371.4355238203.

The spelling of 51244860 in words is "fifty-one million, two hundred forty-four thousand, eight hundred sixty".