51752550 has 24 divisors (see below), whose sum is σ = 128346696. Its totient is φ = 13800640.

The previous prime is 51752543. The next prime is 51752551. The reversal of 51752550 is 5525715.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51752551) 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, 172359 + ... + 172658.

It is an arithmetic number, because the mean of its divisors is an integer number (5347779).

Almost surely, 2^51752550 is an apocalyptic number.

51752550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51752550 is an abundant number, since it is smaller than the sum of its proper divisors (76594146).

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

51752550 is a wasteful number, since it uses less digits than its factorization.

51752550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345032 (or 345027 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 51752550 is about 7193.9245200377. The cubic root of 51752550 is about 372.6581164395.

The spelling of 51752550 in words is "fifty-one million, seven hundred fifty-two thousand, five hundred fifty".