1379551 has 4 divisors (see below), whose sum is σ = 1392552. Its totient is φ = 1366552.

The previous prime is 1379549. The next prime is 1379579. The reversal of 1379551 is 1559731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1379551 - 2¹ = 1379549 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6340 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (348138).

2^1379551 is an apocalyptic number.

1379551 is a deficient number, since it is larger than the sum of its proper divisors (13001).

1379551 is a wasteful number, since it uses less digits than its factorization.

1379551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13000.

The product of its digits is 4725, while the sum is 31.

The square root of 1379551 is about 1174.5428898086. The cubic root of 1379551 is about 111.3215522532.

The spelling of 1379551 in words is "one million, three hundred seventy-nine thousand, five hundred fifty-one".