1536561101 has 2 divisors, whose sum is σ = 1536561102. Its totient is φ = 1536561100.

The previous prime is 1536561079. The next prime is 1536561113. The reversal of 1536561101 is 1011656351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1528888201 + 7672900 = 39101^2 + 2770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1536561101 is a prime.

It is a super-2 number, since 2×1536561101² = 4722040034212664402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1536561151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768280550 + 768280551.

It is an arithmetic number, because the mean of its divisors is an integer number (768280551).

Almost surely, 2^1536561101 is an apocalyptic number.

It is an amenable number.

1536561101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1536561101 is an equidigital number, since it uses as much as digits as its factorization.

1536561101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1536561101 is about 39198.9936222858. The cubic root of 1536561101 is about 1153.9401335301.

The spelling of 1536561101 in words is "one billion, five hundred thirty-six million, five hundred sixty-one thousand, one hundred one".