52197642 has 48 divisors (see below), whose sum is σ = 134939520. Its totient is φ = 14912856.

The previous prime is 52197641. The next prime is 52197643. The reversal of 52197642 is 24679125.

52197642 is a `hidden beast` number, since 5 + 2 + 1 + 9 + 7 + 642 = 666.

It is an interprime number because it is at equal distance from previous prime (52197641) and next prime (52197643).

It is a junction number, because it is equal to n+sod(n) for n = 52197597 and 52197606.

It is not an unprimeable number, because it can be changed into a prime (52197641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7218 + ... + 12509.

It is an arithmetic number, because the mean of its divisors is an integer number (2811240).

Almost surely, 2^52197642 is an apocalyptic number.

52197642 is an abundant number, since it is smaller than the sum of its proper divisors (82741878).

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

52197642 is a wasteful number, since it uses less digits than its factorization.

52197642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19752 (or 19739 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 52197642 is about 7224.7935610646. The cubic root of 52197642 is about 373.7234030655.

The spelling of 52197642 in words is "fifty-two million, one hundred ninety-seven thousand, six hundred forty-two".