51203052 has 36 divisors (see below), whose sum is σ = 129851176. Its totient is φ = 17012160.

The previous prime is 51203039. The next prime is 51203059. The reversal of 51203052 is 25030215.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51203052² = 5243505068229408, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (51203059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9768 + ... + 14064.

Almost surely, 2^51203052 is an apocalyptic number.

It is an amenable number.

51203052 is an abundant number, since it is smaller than the sum of its proper divisors (78648124).

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

51203052 is a wasteful number, since it uses less digits than its factorization.

51203052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638 (or 4633 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 51203052 is about 7155.6307898046. The cubic root of 51203052 is about 371.3344847347.

Adding to 51203052 its reverse (25030215), we get a palindrome (76233267).

The spelling of 51203052 in words is "fifty-one million, two hundred three thousand, fifty-two".