52378407 has 24 divisors (see below), whose sum is σ = 78798720. Its totient is φ = 34768440.

The previous prime is 52378393. The next prime is 52378423. The reversal of 52378407 is 70487325.

It is a de Polignac number, because none of the positive numbers 2^k-52378407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52378457) 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, 106432 + ... + 106922.

It is an arithmetic number, because the mean of its divisors is an integer number (3283280).

Almost surely, 2^52378407 is an apocalyptic number.

52378407 is a deficient number, since it is larger than the sum of its proper divisors (26420313).

52378407 is an equidigital number, since it uses as much as digits as its factorization.

52378407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 52378407 is about 7237.2927949614. The cubic root of 52378407 is about 374.1543182935.

The spelling of 52378407 in words is "fifty-two million, three hundred seventy-eight thousand, four hundred seven".