53161642 has 4 divisors (see below), whose sum is σ = 79742466. Its totient is φ = 26580820.

The previous prime is 53161609. The next prime is 53161643. The reversal of 53161642 is 24616135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50566321 + 2595321 = 7111^2 + 1611^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53161642.

It is not an unprimeable number, because it can be changed into a prime (53161643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13290409 + ... + 13290412.

Almost surely, 2^53161642 is an apocalyptic number.

53161642 is a deficient number, since it is larger than the sum of its proper divisors (26580824).

53161642 is a wasteful number, since it uses less digits than its factorization.

53161642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26580823.

The product of its digits is 4320, while the sum is 28.

The square root of 53161642 is about 7291.2030557378. The cubic root of 53161642 is about 376.0100580152.

Adding to 53161642 its reverse (24616135), we get a palindrome (77777777).

The spelling of 53161642 in words is "fifty-three million, one hundred sixty-one thousand, six hundred forty-two".