52401391 has 8 divisors (see below), whose sum is σ = 61280384. Its totient is φ = 43870680.

The previous prime is 52401367. The next prime is 52401407. The reversal of 52401391 is 19310425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52401391 - 2¹⁵ = 52368623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52401301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86745 + ... + 87346.

It is an arithmetic number, because the mean of its divisors is an integer number (7660048).

Almost surely, 2^52401391 is an apocalyptic number.

52401391 is a deficient number, since it is larger than the sum of its proper divisors (8878993).

52401391 is a wasteful number, since it uses less digits than its factorization.

52401391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174141.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 52401391 is about 7238.8805073713. The cubic root of 52401391 is about 374.2090374408.

The spelling of 52401391 in words is "fifty-two million, four hundred one thousand, three hundred ninety-one".