51023124 has 18 divisors (see below), whose sum is σ = 128975210. Its totient is φ = 17007696.

The previous prime is 51023107. The next prime is 51023129. The reversal of 51023124 is 42132015.

It can be written as a sum of positive squares in only one way, i.e., 38192400 + 12830724 = 6180^2 + 3582^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 51023097 and 51023106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708619 + ... + 708690.

Almost surely, 2^51023124 is an apocalyptic number.

It is an amenable number.

51023124 is an abundant number, since it is smaller than the sum of its proper divisors (77952086).

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

51023124 is a wasteful number, since it uses less digits than its factorization.

51023124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417319 (or 1417314 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51023124 is about 7143.0472488987. The cubic root of 51023124 is about 370.8990166473.

Adding to 51023124 its reverse (42132015), we get a palindrome (93155139).

The spelling of 51023124 in words is "fifty-one million, twenty-three thousand, one hundred twenty-four".