1263157 has 8 divisors (see below), whose sum is σ = 1490432. Its totient is φ = 1047600.

The previous prime is 1263133. The next prime is 1263173. The reversal of 1263157 is 7513621.

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

It is a cyclic number.

It is not a de Polignac number, because 1263157 - 2¹¹ = 1261109 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 (1263107) 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, 2694 + ... + 3127.

It is an arithmetic number, because the mean of its divisors is an integer number (186304).

2^1263157 is an apocalyptic number.

It is an amenable number.

1263157 is a deficient number, since it is larger than the sum of its proper divisors (227275).

1263157 is an equidigital number, since it uses as much as digits as its factorization.

1263157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859.

The product of its digits is 1260, while the sum is 25.

The square root of 1263157 is about 1123.9025758490. The cubic root of 1263157 is about 108.0983614642.

Adding to 1263157 its reverse (7513621), we get a palindrome (8776778).

The spelling of 1263157 in words is "one million, two hundred sixty-three thousand, one hundred fifty-seven".