1553145013 has 6 divisors (see below), whose sum is σ = 1806719766. Its totient is φ = 1331267112.

The previous prime is 1553144933. The next prime is 1553145017. The reversal of 1553145013 is 3105413551.

It can be written as a sum of positive squares in only one way, i.e., 1449553329 + 103591684 = 38073^2 + 10178^2 .

It is not a de Polignac number, because 1553145013 - 2²⁹ = 1016274101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553145017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15848370 + ... + 15848467.

It is an arithmetic number, because the mean of its divisors is an integer number (301119961).

Almost surely, 2^1553145013 is an apocalyptic number.

It is an amenable number.

1553145013 is a deficient number, since it is larger than the sum of its proper divisors (253574753).

1553145013 is an equidigital number, since it uses as much as digits as its factorization.

1553145013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31696851 (or 31696844 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1553145013 is about 39409.9608347940. The cubic root of 1553145013 is about 1158.0767310049.

Adding to 1553145013 its reverse (3105413551), we get a palindrome (4658558564).

The spelling of 1553145013 in words is "one billion, five hundred fifty-three million, one hundred forty-five thousand, thirteen".