1157445 has 36 divisors (see below), whose sum is σ = 2155140. Its totient is φ = 574464.

The previous prime is 1157437. The next prime is 1157449. The reversal of 1157445 is 5447511.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3969 + 1153476 = 63^2 + 1074^2 .

It is not a de Polignac number, because 1157445 - 2³ = 1157437 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157449) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12961 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (59865).

2^1157445 is an apocalyptic number.

1157445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1157445 is a deficient number, since it is larger than the sum of its proper divisors (997695).

1157445 is a wasteful number, since it uses less digits than its factorization.

1157445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 114 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 1157445 is about 1075.8461785962. The cubic root of 1157445 is about 104.9945575410.

The spelling of 1157445 in words is "one million, one hundred fifty-seven thousand, four hundred forty-five".