51205452 has 24 divisors (see below), whose sum is σ = 124674816. Its totient is φ = 16326288.

The previous prime is 51205423. The next prime is 51205463. The reversal of 51205452 is 25450215.

It is a happy 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, 92488 + ... + 93039.

It is an arithmetic number, because the mean of its divisors is an integer number (5194784).

Almost surely, 2^51205452 is an apocalyptic number.

It is an amenable number.

51205452 is an abundant number, since it is smaller than the sum of its proper divisors (73469364).

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

51205452 is a wasteful number, since it uses less digits than its factorization.

51205452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185557 (or 185555 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51205452 is about 7155.7984879397. The cubic root of 51205452 is about 371.3402863995.

Adding to 51205452 its reverse (25450215), we get a palindrome (76655667).

The spelling of 51205452 in words is "fifty-one million, two hundred five thousand, four hundred fifty-two".