53387442 has 24 divisors (see below), whose sum is σ = 116869116. Its totient is φ = 17611776.

The previous prime is 53387419. The next prime is 53387443. The reversal of 53387442 is 24478335.

It is a happy number.

53387442 is a `hidden beast` number, since 533 + 87 + 4 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 549081 = 7269^2 + 741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53387397 and 53387406.

It is not an unprimeable number, because it can be changed into a prime (53387443) 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, 13543 + ... + 17034.

Almost surely, 2^53387442 is an apocalyptic number.

53387442 is an abundant number, since it is smaller than the sum of its proper divisors (63481674).

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

53387442 is a wasteful number, since it uses less digits than its factorization.

53387442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30682 (or 30679 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 53387442 is about 7306.6710614342. The cubic root of 53387442 is about 376.5416640400.

The spelling of 53387442 in words is "fifty-three million, three hundred eighty-seven thousand, four hundred forty-two".