1552545251 has 2 divisors, whose sum is σ = 1552545252. Its totient is φ = 1552545250.

The previous prime is 1552545217. The next prime is 1552545257. The reversal of 1552545251 is 1525452551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552545251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1552545257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776272625 + 776272626.

It is an arithmetic number, because the mean of its divisors is an integer number (776272626).

Almost surely, 2^1552545251 is an apocalyptic number.

1552545251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552545251 is an equidigital number, since it uses as much as digits as its factorization.

1552545251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50000, while the sum is 35.

The square root of 1552545251 is about 39402.3508308832. The cubic root of 1552545251 is about 1157.9276442949.

The spelling of 1552545251 in words is "one billion, five hundred fifty-two million, five hundred forty-five thousand, two hundred fifty-one".