15527257049 has 2 divisors, whose sum is σ = 15527257050. Its totient is φ = 15527257048.

The previous prime is 15527257033. The next prime is 15527257051. The reversal of 15527257049 is 94075272551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14863267225 + 663989824 = 121915^2 + 25768^2 .

It is a cyclic number.

It is not a de Polignac number, because 15527257049 - 2⁴ = 15527257033 is a prime.

It is a super-2 number, since 2×15527257049² (a number of 21 digits) contains 22 as substring.

Together with 15527257051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15527256994 and 15527257012.

It is not a weakly prime, because it can be changed into another prime (15527257019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7763628524 + 7763628525.

It is an arithmetic number, because the mean of its divisors is an integer number (7763628525).

Almost surely, 2^15527257049 is an apocalyptic number.

It is an amenable number.

15527257049 is a deficient number, since it is larger than the sum of its proper divisors (1).

15527257049 is an equidigital number, since it uses as much as digits as its factorization.

15527257049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882000, while the sum is 47.

The spelling of 15527257049 in words is "fifteen billion, five hundred twenty-seven million, two hundred fifty-seven thousand, forty-nine".