56101121 has 2 divisors, whose sum is σ = 56101122. Its totient is φ = 56101120.

The previous prime is 56101081. The next prime is 56101141. The reversal of 56101121 is 12110165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49547521 + 6553600 = 7039^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 56101121 - 2²² = 51906817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56101121.

It is not a weakly prime, because it can be changed into another prime (56101141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28050560 + 28050561.

It is an arithmetic number, because the mean of its divisors is an integer number (28050561).

Almost surely, 2^56101121 is an apocalyptic number.

It is an amenable number.

56101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

56101121 is an equidigital number, since it uses as much as digits as its factorization.

56101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 56101121 is about 7490.0681572333. The cubic root of 56101121 is about 382.8163808386.

Adding to 56101121 its reverse (12110165), we get a palindrome (68211286).

The spelling of 56101121 in words is "fifty-six million, one hundred one thousand, one hundred twenty-one".