1553252111 has 2 divisors, whose sum is σ = 1553252112. Its totient is φ = 1553252110.

The previous prime is 1553252087. The next prime is 1553252131. The reversal of 1553252111 is 1112523551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1553252111 - 2⁶ = 1553252047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553252131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776626055 + 776626056.

It is an arithmetic number, because the mean of its divisors is an integer number (776626056).

Almost surely, 2^1553252111 is an apocalyptic number.

1553252111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553252111 is an equidigital number, since it uses as much as digits as its factorization.

1553252111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 26.

The square root of 1553252111 is about 39411.3195795320. The cubic root of 1553252111 is about 1158.1033490069.

Adding to 1553252111 its reverse (1112523551), we get a palindrome (2665775662).

The spelling of 1553252111 in words is "one billion, five hundred fifty-three million, two hundred fifty-two thousand, one hundred eleven".