53457442 has 4 divisors (see below), whose sum is σ = 80186166. Its totient is φ = 26728720.

The previous prime is 53457427. The next prime is 53457449. The reversal of 53457442 is 24475435.

53457442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 47596201 + 5861241 = 6899^2 + 2421^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53457398 and 53457407.

It is not an unprimeable number, because it can be changed into a prime (53457449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13364359 + ... + 13364362.

Almost surely, 2^53457442 is an apocalyptic number.

53457442 is a deficient number, since it is larger than the sum of its proper divisors (26728724).

53457442 is a wasteful number, since it uses less digits than its factorization.

53457442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26728723.

The product of its digits is 67200, while the sum is 34.

The square root of 53457442 is about 7311.4596353943. The cubic root of 53457442 is about 376.7061621815.

It can be divided in two parts, 534 and 57442, that multiplied together give a triangular number (30674028 = T₇₈₃₂).

The spelling of 53457442 in words is "fifty-three million, four hundred fifty-seven thousand, four hundred forty-two".