56406749 has 8 divisors (see below), whose sum is σ = 64790400. Its totient is φ = 48104496.

The previous prime is 56406739. The next prime is 56406751. The reversal of 56406749 is 94760465.

56406749 = T₄₀₁₁ + T₄₀₁₂ + ... + T₄₀₁₇.

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-56406749 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 (56406709) 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, 18854 + ... + 21639.

It is an arithmetic number, because the mean of its divisors is an integer number (8098800).

Almost surely, 2^56406749 is an apocalyptic number.

It is an amenable number.

56406749 is a deficient number, since it is larger than the sum of its proper divisors (8383651).

56406749 is a wasteful number, since it uses less digits than its factorization.

56406749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40699.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 56406749 is about 7510.4426633854. The cubic root of 56406749 is about 383.5102920008.

The spelling of 56406749 in words is "fifty-six million, four hundred six thousand, seven hundred forty-nine".