53442536 has 24 divisors (see below), whose sum is σ = 116565570. Its totient is φ = 22903776.

The previous prime is 53442533. The next prime is 53442539. The reversal of 53442536 is 63524435.

It is an interprime number because it is at equal distance from previous prime (53442533) and next prime (53442539).

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 240100 = 7294^2 + 490^2 .

It is a super-2 number, since 2×53442536² = 5712209308222592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53442533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67775 + ... + 68558.

Almost surely, 2^53442536 is an apocalyptic number.

53442536 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53442536 is an abundant number, since it is smaller than the sum of its proper divisors (63123034).

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

53442536 is a wasteful number, since it uses less digits than its factorization.

53442536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136353 (or 136342 counting only the distinct ones).

The product of its digits is 43200, while the sum is 32.

The square root of 53442536 is about 7310.4402056237. The cubic root of 53442536 is about 376.6711455163.

The spelling of 53442536 in words is "fifty-three million, four hundred forty-two thousand, five hundred thirty-six".