51501792 has 48 divisors (see below), whose sum is σ = 137062800. Its totient is φ = 16929792.

The previous prime is 51501773. The next prime is 51501811. The reversal of 51501792 is 29710515.

It is an interprime number because it is at equal distance from previous prime (51501773) and next prime (51501811).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51501792² = 5304869158422528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3334 + ... + 10682.

It is an arithmetic number, because the mean of its divisors is an integer number (2855475).

Almost surely, 2^51501792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51501792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68531400).

51501792 is an abundant number, since it is smaller than the sum of its proper divisors (85561008).

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

51501792 is a wasteful number, since it uses less digits than its factorization.

51501792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7435 (or 7427 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 51501792 is about 7176.4749006737. The cubic root of 51501792 is about 372.0552582961.

The spelling of 51501792 in words is "fifty-one million, five hundred one thousand, seven hundred ninety-two".