1551079 has 4 divisors (see below), whose sum is σ = 1555384. Its totient is φ = 1546776.

The previous prime is 1551049. The next prime is 1551083. The reversal of 1551079 is 9701551.

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 1551079 - 2⁹ = 1550567 is a prime.

It is an Ulam 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 (1551019) 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, 1557 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (388846).

2^1551079 is an apocalyptic number.

1551079 is a deficient number, since it is larger than the sum of its proper divisors (4305).

1551079 is an equidigital number, since it uses as much as digits as its factorization.

1551079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 1551079 is about 1245.4232212385. The cubic root of 1551079 is about 115.7563007080.

The spelling of 1551079 in words is "one million, five hundred fifty-one thousand, seventy-nine".