53162730 has 40 divisors (see below), whose sum is σ = 142950852. Its totient is φ = 14176512.

The previous prime is 53162701. The next prime is 53162731. The reversal of 53162730 is 3726135.

It is a happy number.

53162730 is a `hidden beast` number, since 5 + 3 + 1 + 627 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 149769 = 7281^2 + 387^2 .

It is a super-2 number, since 2×53162730² = 5652551722105800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 53162694 and 53162703.

It is not an unprimeable number, because it can be changed into a prime (53162731) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32007 + ... + 33626.

Almost surely, 2^53162730 is an apocalyptic number.

53162730 is an abundant number, since it is smaller than the sum of its proper divisors (89788122).

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

53162730 is a wasteful number, since it uses less digits than its factorization.

53162730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65652 (or 65643 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 53162730 is about 7291.2776658141. The cubic root of 53162730 is about 376.0126231238.

Adding to 53162730 its reverse (3726135), we get a palindrome (56888865).

The spelling of 53162730 in words is "fifty-three million, one hundred sixty-two thousand, seven hundred thirty".