1375757121 has 32 divisors (see below), whose sum is σ = 1947359232. Its totient is φ = 862167680.

The previous prime is 1375757059. The next prime is 1375757171. The reversal of 1375757121 is 1217575731.

It is a cyclic number.

It is not a de Polignac number, because 1375757121 - 2¹⁰ = 1375756097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1375757121.

It is not an unprimeable number, because it can be changed into a prime (1375757171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1333876 + ... + 1334906.

It is an arithmetic number, because the mean of its divisors is an integer number (60854976).

Almost surely, 2^1375757121 is an apocalyptic number.

It is an amenable number.

1375757121 is a deficient number, since it is larger than the sum of its proper divisors (571602111).

1375757121 is a wasteful number, since it uses less digits than its factorization.

1375757121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its digits is 51450, while the sum is 39.

The square root of 1375757121 is about 37091.2000479898. The cubic root of 1375757121 is about 1112.1941074748.

The spelling of 1375757121 in words is "one billion, three hundred seventy-five million, seven hundred fifty-seven thousand, one hundred twenty-one".