1375971 has 8 divisors (see below), whose sum is σ = 1841424. Its totient is φ = 913920.

The previous prime is 1375951. The next prime is 1375981. The reversal of 1375971 is 1795731.

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

It is not a de Polignac number, because 1375971 - 2¹⁵ = 1343203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375901) 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, 331 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (230178).

2^1375971 is an apocalyptic number.

1375971 is a deficient number, since it is larger than the sum of its proper divisors (465453).

1375971 is a wasteful number, since it uses less digits than its factorization.

1375971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701.

The product of its digits is 6615, while the sum is 33.

The square root of 1375971 is about 1173.0179026767. The cubic root of 1375971 is about 111.2251739410.

It can be divided in two parts, 1375 and 971, that added together give a triangular number (2346 = T₆₈).

The spelling of 1375971 in words is "one million, three hundred seventy-five thousand, nine hundred seventy-one".