1375221504 has 144 divisors (see below), whose sum is σ = 3861688320. Its totient is φ = 433827840.

The previous prime is 1375221487. The next prime is 1375221541. The reversal of 1375221504 is 4051225731.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118362 + ... + 1119590.

It is an arithmetic number, because the mean of its divisors is an integer number (26817280).

Almost surely, 2^1375221504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375221504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1930844160).

1375221504 is an abundant number, since it is smaller than the sum of its proper divisors (2486466816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375221504 is a wasteful number, since it uses less digits than its factorization.

1375221504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1375221504 is about 37083.9790745276. The cubic root of 1375221504 is about 1112.0497536526.

The spelling of 1375221504 in words is "one billion, three hundred seventy-five million, two hundred twenty-one thousand, five hundred four".