56987401 has 3 divisors (see below), whose sum is σ = 56994951. Its totient is φ = 56979852.

The previous prime is 56987351. The next prime is 56987419. The reversal of 56987401 is 10478965.

The square root of 56987401 is 7549.

It is a perfect power (a square), and thus also a powerful number.

56987401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 47623801 + 9363600 = 6901^2 + 3060^2 .

It is not a de Polignac number, because 56987401 - 2¹¹ = 56985353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56987701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3775 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (18998317).

Almost surely, 2^56987401 is an apocalyptic number.

56987401 is the 7549-th square number.

56987401 is the 3775-th centered octagonal number.

It is an amenable number.

56987401 is a deficient number, since it is larger than the sum of its proper divisors (7550).

56987401 is an frugal number, since it uses more digits than its factorization.

56987401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15098 (or 7549 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The cubic root of 56987401 is about 384.8217559121.

The spelling of 56987401 in words is "fifty-six million, nine hundred eighty-seven thousand, four hundred one".