51906024 has 72 divisors (see below), whose sum is σ = 148441410. Its totient is φ = 16383168.

The previous prime is 51906013. The next prime is 51906061. The reversal of 51906024 is 42060915.

51906024 is a `hidden beast` number, since 51 + 9 + 0 + 602 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 324900 = 7182^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24994 + ... + 26990.

Almost surely, 2^51906024 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 51906024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74220705).

51906024 is an abundant number, since it is smaller than the sum of its proper divisors (96535386).

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

51906024 is a wasteful number, since it uses less digits than its factorization.

51906024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51906024 is about 7204.5835410522. The cubic root of 51906024 is about 373.0261297931.

Adding to 51906024 its reverse (42060915), we get a palindrome (93966939).

The spelling of 51906024 in words is "fifty-one million, nine hundred six thousand, twenty-four".