51153040 has 40 divisors (see below), whose sum is σ = 119423160. Its totient is φ = 20376576.

The previous prime is 51153029. The next prime is 51153043. The reversal of 51153040 is 4035115.

It can be written as a sum of positive squares in 4 ways, for example, as 1936 + 51151104 = 44^2 + 7152^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 51152999 and 51153017.

It is not an unprimeable number, because it can be changed into a prime (51153043) 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, 20332 + ... + 22708.

It is an arithmetic number, because the mean of its divisors is an integer number (2985579).

Almost surely, 2^51153040 is an apocalyptic number.

It is an amenable number.

51153040 is an abundant number, since it is smaller than the sum of its proper divisors (68270120).

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

51153040 is a wasteful number, since it uses less digits than its factorization.

51153040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51153040 is about 7152.1353454755. The cubic root of 51153040 is about 371.2135464364.

Adding to 51153040 its reverse (4035115), we get a palindrome (55188155).

The spelling of 51153040 in words is "fifty-one million, one hundred fifty-three thousand, forty".