1396551 has 8 divisors (see below), whose sum is σ = 2005360. Its totient is φ = 859392.

The previous prime is 1396547. The next prime is 1396559. The reversal of 1396551 is 1556931.

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

It is not a de Polignac number, because 1396551 - 2² = 1396547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396559) 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, 17866 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (250670).

2^1396551 is an apocalyptic number.

1396551 is a deficient number, since it is larger than the sum of its proper divisors (608809).

1396551 is a wasteful number, since it uses less digits than its factorization.

1396551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35825.

The product of its digits is 4050, while the sum is 30.

The square root of 1396551 is about 1181.7575893558. The cubic root of 1396551 is about 111.7769529950.

It can be divided in two parts, 139655 and 1, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 1396551 in words is "one million, three hundred ninety-six thousand, five hundred fifty-one".