1553022253 has 4 divisors (see below), whose sum is σ = 1553172700. Its totient is φ = 1552871808.

The previous prime is 1553022227. The next prime is 1553022257. The reversal of 1553022253 is 3522203551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 993321289 + 559700964 = 31517^2 + 23658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1553022253 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 (1553022257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58500 + ... + 80797.

It is an arithmetic number, because the mean of its divisors is an integer number (388293175).

Almost surely, 2^1553022253 is an apocalyptic number.

It is an amenable number.

1553022253 is a deficient number, since it is larger than the sum of its proper divisors (150447).

1553022253 is a wasteful number, since it uses less digits than its factorization.

1553022253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150446.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1553022253 is about 39408.4033297468. The cubic root of 1553022253 is about 1158.0462188840.

The spelling of 1553022253 in words is "one billion, five hundred fifty-three million, twenty-two thousand, two hundred fifty-three".