15525541 has 2 divisors, whose sum is σ = 15525542. Its totient is φ = 15525540.

The previous prime is 15525509. The next prime is 15525551. The reversal of 15525541 is 14552551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 894916 = 3825^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 15525541 - 2⁵ = 15525509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15525551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7762770 + 7762771.

It is an arithmetic number, because the mean of its divisors is an integer number (7762771).

Almost surely, 2^15525541 is an apocalyptic number.

It is an amenable number.

15525541 is a deficient number, since it is larger than the sum of its proper divisors (1).

15525541 is an equidigital number, since it uses as much as digits as its factorization.

15525541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000, while the sum is 28.

The square root of 15525541 is about 3940.2463120978. The cubic root of 15525541 is about 249.4684225026.

The spelling of 15525541 in words is "fifteen million, five hundred twenty-five thousand, five hundred forty-one".