1375505553 has 8 divisors (see below), whose sum is σ = 1850833600. Its totient is φ = 908590608.

The previous prime is 1375505539. The next prime is 1375505587. The reversal of 1375505553 is 3555055731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1375505553 - 2⁶ = 1375505489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375505953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102893 + ... + 2103546.

It is an arithmetic number, because the mean of its divisors is an integer number (231354200).

Almost surely, 2^1375505553 is an apocalyptic number.

It is an amenable number.

1375505553 is a deficient number, since it is larger than the sum of its proper divisors (475328047).

1375505553 is a wasteful number, since it uses less digits than its factorization.

1375505553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206551.

The product of its (nonzero) digits is 196875, while the sum is 39.

The square root of 1375505553 is about 37087.8086842563. The cubic root of 1375505553 is about 1112.1263121983.

The spelling of 1375505553 in words is "one billion, three hundred seventy-five million, five hundred five thousand, five hundred fifty-three".