56133749 has 8 divisors (see below), whose sum is σ = 64208640. Its totient is φ = 48072816.

The previous prime is 56133743. The next prime is 56133757. The reversal of 56133749 is 94733165.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56133749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56133743) 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, 7412 + ... + 12930.

It is an arithmetic number, because the mean of its divisors is an integer number (8026080).

Almost surely, 2^56133749 is an apocalyptic number.

It is an amenable number.

56133749 is a deficient number, since it is larger than the sum of its proper divisors (8074891).

56133749 is a wasteful number, since it uses less digits than its factorization.

56133749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979.

The product of its digits is 68040, while the sum is 38.

The square root of 56133749 is about 7492.2459249547. The cubic root of 56133749 is about 382.8905808544.

The spelling of 56133749 in words is "fifty-six million, one hundred thirty-three thousand, seven hundred forty-nine".