15526052261 has 2 divisors, whose sum is σ = 15526052262. Its totient is φ = 15526052260.

The previous prime is 15526052233. The next prime is 15526052263. The reversal of 15526052261 is 16225062551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15393364900 + 132687361 = 124070^2 + 11519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15526052261 is a prime.

It is a super-2 number, since 2×15526052261² (a number of 21 digits) contains 22 as substring.

Together with 15526052263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15526052263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7763026130 + 7763026131.

It is an arithmetic number, because the mean of its divisors is an integer number (7763026131).

Almost surely, 2^15526052261 is an apocalyptic number.

It is an amenable number.

15526052261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15526052261 is an equidigital number, since it uses as much as digits as its factorization.

15526052261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 15526052261 in words is "fifteen billion, five hundred twenty-six million, fifty-two thousand, two hundred sixty-one".