1553479 has 2 divisors, whose sum is σ = 1553480. Its totient is φ = 1553478.

The previous prime is 1553471. The next prime is 1553507. The reversal of 1553479 is 9743551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1553479 - 2³ = 1553471 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776739 + 776740.

It is an arithmetic number, because the mean of its divisors is an integer number (776740).

2^1553479 is an apocalyptic number.

1553479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553479 is an equidigital number, since it uses as much as digits as its factorization.

1553479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 1553479 is about 1246.3863766906. The cubic root of 1553479 is about 115.8159735672.

The spelling of 1553479 in words is "one million, five hundred fifty-three thousand, four hundred seventy-nine".