56072101 has 2 divisors, whose sum is σ = 56072102. Its totient is φ = 56072100.

The previous prime is 56072063. The next prime is 56072113. The reversal of 56072101 is 10127065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31371201 + 24700900 = 5601^2 + 4970^2 .

It is a cyclic number.

It is not a de Polignac number, because 56072101 - 2¹⁹ = 55547813 is a prime.

It is a super-3 number, since 3×56072101³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56072801) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28036050 + 28036051.

It is an arithmetic number, because the mean of its divisors is an integer number (28036051).

Almost surely, 2^56072101 is an apocalyptic number.

It is an amenable number.

56072101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56072101 is an equidigital number, since it uses as much as digits as its factorization.

56072101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 56072101 is about 7488.1306746076. The cubic root of 56072101 is about 382.7503616738.

Adding to 56072101 its reverse (10127065), we get a palindrome (66199166).

The spelling of 56072101 in words is "fifty-six million, seventy-two thousand, one hundred one".