1520879 has 2 divisors, whose sum is σ = 1520880. Its totient is φ = 1520878.

The previous prime is 1520851. The next prime is 1520887. The reversal of 1520879 is 9780251.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760439 + 760440.

It is an arithmetic number, because the mean of its divisors is an integer number (760440).

2^1520879 is an apocalyptic number.

1520879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520879 is an equidigital number, since it uses as much as digits as its factorization.

1520879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1520879 is about 1233.2392306442. The cubic root of 1520879 is about 115.0001008191. Note that the first 3 decimals are identical.

The spelling of 1520879 in words is "one million, five hundred twenty thousand, eight hundred seventy-nine".