52147420 has 48 divisors (see below), whose sum is σ = 118738368. Its totient is φ = 19123200.

The previous prime is 52147399. The next prime is 52147427. The reversal of 52147420 is 2474125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52147427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42820 + ... + 44020.

It is an arithmetic number, because the mean of its divisors is an integer number (2473716).

Almost surely, 2^52147420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52147420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59369184).

52147420 is an abundant number, since it is smaller than the sum of its proper divisors (66590948).

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

52147420 is a wasteful number, since it uses less digits than its factorization.

52147420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 52147420 is about 7221.3170543883. The cubic root of 52147420 is about 373.6035051875.

The spelling of 52147420 in words is "fifty-two million, one hundred forty-seven thousand, four hundred twenty".