1553252445 has 72 divisors (see below), whose sum is σ = 2857196160. Its totient is φ = 780373440.

The previous prime is 1553252443. The next prime is 1553252473. The reversal of 1553252445 is 5442523551.

It is not a de Polignac number, because 1553252445 - 2¹ = 1553252443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553252443) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1689696 + ... + 1690614.

It is an arithmetic number, because the mean of its divisors is an integer number (39683280).

Almost surely, 2^1553252445 is an apocalyptic number.

1553252445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553252445 is a deficient number, since it is larger than the sum of its proper divisors (1303943715).

1553252445 is a wasteful number, since it uses less digits than its factorization.

1553252445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1021 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 1553252445 is about 39411.3238168930. The cubic root of 1553252445 is about 1158.1034320169.

Adding to 1553252445 its reverse (5442523551), we get a palindrome (6995775996).

The spelling of 1553252445 in words is "one billion, five hundred fifty-three million, two hundred fifty-two thousand, four hundred forty-five".