56194509 has 16 divisors (see below), whose sum is σ = 85788288. Its totient is φ = 32051712.

The previous prime is 56194493. The next prime is 56194513. The reversal of 56194509 is 90549165.

It is not a de Polignac number, because 56194509 - 2⁴ = 56194493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56194519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10789 + ... + 15125.

It is an arithmetic number, because the mean of its divisors is an integer number (5361768).

Almost surely, 2^56194509 is an apocalyptic number.

It is an amenable number.

56194509 is a deficient number, since it is larger than the sum of its proper divisors (29593779).

56194509 is a wasteful number, since it uses less digits than its factorization.

56194509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 56194509 is about 7496.2996871790. The cubic root of 56194509 is about 383.0286798485.

The spelling of 56194509 in words is "fifty-six million, one hundred ninety-four thousand, five hundred nine".