1553417253 has 6 divisors (see below), whose sum is σ = 2243824934. Its totient is φ = 1035611496.

The previous prime is 1553417251. The next prime is 1553417323. The reversal of 1553417253 is 3527143551.

1553417253 is a `hidden beast` number, since 1 + 5 + 534 + 1 + 72 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 859779684 + 693637569 = 29322^2 + 26337^2 .

It is not a de Polignac number, because 1553417253 - 2¹ = 1553417251 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 (1553417251) 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, 86300950 + ... + 86300967.

Almost surely, 2^1553417253 is an apocalyptic number.

It is an amenable number.

1553417253 is a deficient number, since it is larger than the sum of its proper divisors (690407681).

1553417253 is a wasteful number, since it uses less digits than its factorization.

1553417253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172601923 (or 172601920 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 1553417253 is about 39413.4146325842. The cubic root of 1553417253 is about 1158.1443907936.

The spelling of 1553417253 in words is "one billion, five hundred fifty-three million, four hundred seventeen thousand, two hundred fifty-three".