53151620 has 24 divisors (see below), whose sum is σ = 116472384. Its totient is φ = 20336096.

The previous prime is 53151617. The next prime is 53151629. The reversal of 53151620 is 2615135.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (53151629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57314 + ... + 58233.

It is an arithmetic number, because the mean of its divisors is an integer number (4853016).

Almost surely, 2^53151620 is an apocalyptic number.

It is an amenable number.

53151620 is an abundant number, since it is smaller than the sum of its proper divisors (63320764).

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

53151620 is a wasteful number, since it uses less digits than its factorization.

53151620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115579 (or 115577 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 53151620 is about 7290.5157567898. The cubic root of 53151620 is about 375.9864281354.

Adding to 53151620 its reverse (2615135), we get a palindrome (55766755).

The spelling of 53151620 in words is "fifty-three million, one hundred fifty-one thousand, six hundred twenty".