52421670 has 72 divisors (see below), whose sum is σ = 158562144. Its totient is φ = 11981088.

The previous prime is 52421653. The next prime is 52421683. The reversal of 52421670 is 7612425.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1534 + ... + 10353.

It is an arithmetic number, because the mean of its divisors is an integer number (2202252).

Almost surely, 2^52421670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52421670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79281072).

52421670 is an abundant number, since it is smaller than the sum of its proper divisors (106140474).

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

52421670 is a wasteful number, since it uses less digits than its factorization.

52421670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11914 (or 11904 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 52421670 is about 7240.2810718922. The cubic root of 52421670 is about 374.2573033757.

The spelling of 52421670 in words is "fifty-two million, four hundred twenty-one thousand, six hundred seventy".