53147438 has 4 divisors (see below), whose sum is σ = 79721160. Its totient is φ = 26573718.

The previous prime is 53147407. The next prime is 53147443. The reversal of 53147438 is 83474135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83474135 = 5 ⋅16694827.

It is a junction number, because it is equal to n+sod(n) for n = 53147398 and 53147407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13286858 + ... + 13286861.

It is an arithmetic number, because the mean of its divisors is an integer number (19930290).

Almost surely, 2^53147438 is an apocalyptic number.

53147438 is a deficient number, since it is larger than the sum of its proper divisors (26573722).

53147438 is a wasteful number, since it uses less digits than its factorization.

53147438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26573721.

The product of its digits is 40320, while the sum is 35.

The square root of 53147438 is about 7290.2289401637. The cubic root of 53147438 is about 375.9765669341.

The spelling of 53147438 in words is "fifty-three million, one hundred forty-seven thousand, four hundred thirty-eight".