56781541 has 8 divisors (see below), whose sum is σ = 58088160. Its totient is φ = 55486512.

The previous prime is 56781523. The next prime is 56781551. The reversal of 56781541 is 14518765.

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

It is a cyclic number.

It is not a de Polignac number, because 56781541 - 2⁵ = 56781509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56781541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56781521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7426 + ... + 12988.

It is an arithmetic number, because the mean of its divisors is an integer number (7261020).

Almost surely, 2^56781541 is an apocalyptic number.

It is an amenable number.

56781541 is a deficient number, since it is larger than the sum of its proper divisors (1306619).

56781541 is a wasteful number, since it uses less digits than its factorization.

56781541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795.

The product of its digits is 33600, while the sum is 37.

The square root of 56781541 is about 7535.3527455588. The cubic root of 56781541 is about 384.3578230234.

The spelling of 56781541 in words is "fifty-six million, seven hundred eighty-one thousand, five hundred forty-one".