1257553 has 12 divisors (see below), whose sum is σ = 1457680. Its totient is φ = 1081080.

The previous prime is 1257547. The next prime is 1257559. The reversal of 1257553 is 3557521.

It is an interprime number because it is at equal distance from previous prime (1257547) and next prime (1257559).

It is not a de Polignac number, because 1257553 - 2⁵ = 1257521 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1257559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026 + ... + 2572.

2^1257553 is an apocalyptic number.

It is an amenable number.

1257553 is a deficient number, since it is larger than the sum of its proper divisors (200127).

1257553 is a wasteful number, since it uses less digits than its factorization.

1257553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 577 counting only the distinct ones).

The product of its digits is 5250, while the sum is 28.

The square root of 1257553 is about 1121.4067058833. The cubic root of 1257553 is about 107.9382649005.

Subtracting 1257553 from its reverse (3557521), we obtain a cube (2299968 = 132³).

The spelling of 1257553 in words is "one million, two hundred fifty-seven thousand, five hundred fifty-three".