53151442 has 4 divisors (see below), whose sum is σ = 79727166. Its totient is φ = 26575720.

The previous prime is 53151433. The next prime is 53151451. The reversal of 53151442 is 24415135.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (53151433) and next prime (53151451).

It can be written as a sum of positive squares in only one way, i.e., 47348161 + 5803281 = 6881^2 + 2409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13287859 + ... + 13287862.

Almost surely, 2^53151442 is an apocalyptic number.

53151442 is a deficient number, since it is larger than the sum of its proper divisors (26575724).

53151442 is a wasteful number, since it uses less digits than its factorization.

53151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26575723.

The product of its digits is 2400, while the sum is 25.

The square root of 53151442 is about 7290.5035491384. The cubic root of 53151442 is about 375.9860084201.

Adding to 53151442 its reverse (24415135), we get a palindrome (77566577).

The spelling of 53151442 in words is "fifty-three million, one hundred fifty-one thousand, four hundred forty-two".