53742971 has 4 divisors (see below), whose sum is σ = 54166272. Its totient is φ = 53319672.

The previous prime is 53742889. The next prime is 53743021. The reversal of 53742971 is 17924735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17924735 = 5 ⋅3584947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53742971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53742571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211460 + ... + 211713.

It is an arithmetic number, because the mean of its divisors is an integer number (13541568).

Almost surely, 2^53742971 is an apocalyptic number.

53742971 is a deficient number, since it is larger than the sum of its proper divisors (423301).

53742971 is a wasteful number, since it uses less digits than its factorization.

53742971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423300.

The product of its digits is 52920, while the sum is 38.

The square root of 53742971 is about 7330.9597598132. The cubic root of 53742971 is about 377.3756642116.

The spelling of 53742971 in words is "fifty-three million, seven hundred forty-two thousand, nine hundred seventy-one".