52978194 has 72 divisors (see below), whose sum is σ = 125528832. Its totient is φ = 16128720.

The previous prime is 52978187. The next prime is 52978201. The reversal of 52978194 is 49187925.

It is an interprime number because it is at equal distance from previous prime (52978187) and next prime (52978201).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 201307 + ... + 201569.

It is an arithmetic number, because the mean of its divisors is an integer number (1743456).

Almost surely, 2^52978194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52978194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62764416).

52978194 is an abundant number, since it is smaller than the sum of its proper divisors (72550638).

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

52978194 is a wasteful number, since it uses less digits than its factorization.

52978194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 318 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 52978194 is about 7278.6120929749. The cubic root of 52978194 is about 375.5770529044.

The spelling of 52978194 in words is "fifty-two million, nine hundred seventy-eight thousand, one hundred ninety-four".