1552124521 has 2 divisors, whose sum is σ = 1552124522. Its totient is φ = 1552124520.

The previous prime is 1552124491. The next prime is 1552124533. The reversal of 1552124521 is 1254212551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047493225 + 504631296 = 32365^2 + 22464^2 .

It is an emirp because it is prime and its reverse (1254212551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1552124521 - 2⁹ = 1552124009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1552124521.

It is not a weakly prime, because it can be changed into another prime (1552124551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776062260 + 776062261.

It is an arithmetic number, because the mean of its divisors is an integer number (776062261).

Almost surely, 2^1552124521 is an apocalyptic number.

It is an amenable number.

1552124521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552124521 is an equidigital number, since it uses as much as digits as its factorization.

1552124521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000, while the sum is 28.

The square root of 1552124521 is about 39397.0115744837. The cubic root of 1552124521 is about 1157.8230378084.

The spelling of 1552124521 in words is "one billion, five hundred fifty-two million, one hundred twenty-four thousand, five hundred twenty-one".