53725642 has 4 divisors (see below), whose sum is σ = 80588466. Its totient is φ = 26862820.

The previous prime is 53725601. The next prime is 53725657. The reversal of 53725642 is 24652735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24652735 = 5 ⋅4930547.

It can be written as a sum of positive squares in only one way, i.e., 53275401 + 450241 = 7299^2 + 671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53725598 and 53725607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13431409 + ... + 13431412.

Almost surely, 2^53725642 is an apocalyptic number.

53725642 is a deficient number, since it is larger than the sum of its proper divisors (26862824).

53725642 is a wasteful number, since it uses less digits than its factorization.

53725642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26862823.

The product of its digits is 50400, while the sum is 34.

The square root of 53725642 is about 7329.7777592503. Note that the first 4 decimals coincide. The cubic root of 53725642 is about 377.3350992424.

The spelling of 53725642 in words is "fifty-three million, seven hundred twenty-five thousand, six hundred forty-two".