56121711 has 8 divisors (see below), whose sum is σ = 76851504. Its totient is φ = 36403200.

The previous prime is 56121707. The next prime is 56121731. The reversal of 56121711 is 11712165.

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

It is not a de Polignac number, because 56121711 - 2² = 56121707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121731) 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, 252690 + ... + 252911.

It is an arithmetic number, because the mean of its divisors is an integer number (9606438).

Almost surely, 2^56121711 is an apocalyptic number.

56121711 is a deficient number, since it is larger than the sum of its proper divisors (20729793).

56121711 is a wasteful number, since it uses less digits than its factorization.

56121711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505641.

The product of its digits is 420, while the sum is 24.

The square root of 56121711 is about 7491.4425179668. The cubic root of 56121711 is about 382.8632083354.

Adding to 56121711 its reverse (11712165), we get a palindrome (67833876).

The spelling of 56121711 in words is "fifty-six million, one hundred twenty-one thousand, seven hundred eleven".