52651830 has 128 divisors (see below), whose sum is σ = 164560896. Its totient is φ = 10454400.

The previous prime is 52651829. The next prime is 52651871. The reversal of 52651830 is 3815625.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52635 + ... + 53625.

It is an arithmetic number, because the mean of its divisors is an integer number (1285632).

Almost surely, 2^52651830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52651830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82280448).

52651830 is an abundant number, since it is smaller than the sum of its proper divisors (111909066).

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

52651830 is a wasteful number, since it uses less digits than its factorization.

52651830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 52651830 is about 7256.1580743531. The cubic root of 52651830 is about 374.8042355990.

The spelling of 52651830 in words is "fifty-two million, six hundred fifty-one thousand, eight hundred thirty".