52251870 has 64 divisors (see below), whose sum is σ = 137687040. Its totient is φ = 12585600.

The previous prime is 52251869. The next prime is 52251877. The reversal of 52251870 is 7815225.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52251877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62616 + ... + 63444.

It is an arithmetic number, because the mean of its divisors is an integer number (2151360).

Almost surely, 2^52251870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52251870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68843520).

52251870 is an abundant number, since it is smaller than the sum of its proper divisors (85435170).

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

52251870 is a wasteful number, since it uses less digits than its factorization.

52251870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 52251870 is about 7228.5454968479. The cubic root of 52251870 is about 373.8527783769.

The spelling of 52251870 in words is "fifty-two million, two hundred fifty-one thousand, eight hundred seventy".