52381407 has 8 divisors (see below), whose sum is σ = 75214384. Its totient is φ = 32234688.

The previous prime is 52381379. The next prime is 52381409. The reversal of 52381407 is 70418325.

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

It is not a de Polignac number, because 52381407 - 2⁸ = 52381151 is a prime.

It is the 7238-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52381409) by changing a digit.

It is a nontrivial repunit in base 7237.

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, 671518 + ... + 671595.

It is an arithmetic number, because the mean of its divisors is an integer number (9401798).

Almost surely, 2^52381407 is an apocalyptic number.

52381407 is a deficient number, since it is larger than the sum of its proper divisors (22832977).

52381407 is a wasteful number, since it uses less digits than its factorization.

52381407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343129.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 52381407 is about 7237.5000518135. The cubic root of 52381407 is about 374.1614614503.

The spelling of 52381407 in words is "fifty-two million, three hundred eighty-one thousand, four hundred seven".