52351020 has 36 divisors (see below), whose sum is σ = 158798640. Its totient is φ = 13960224.

The previous prime is 52350983. The next prime is 52351021. The reversal of 52351020 is 2015325.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52350984 and 52351002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52351021) 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, 145240 + ... + 145599.

Almost surely, 2^52351020 is an apocalyptic number.

It is an amenable number.

52351020 is an abundant number, since it is smaller than the sum of its proper divisors (106447620).

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

52351020 is a wasteful number, since it uses less digits than its factorization.

52351020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290854 (or 290849 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 52351020 is about 7235.4004726760. The cubic root of 52351020 is about 374.0890958010.

Adding to 52351020 its reverse (2015325), we get a palindrome (54366345).

The spelling of 52351020 in words is "fifty-two million, three hundred fifty-one thousand, twenty".