1372057 has 4 divisors (see below), whose sum is σ = 1374516. Its totient is φ = 1369600.

The previous prime is 1372051. The next prime is 1372079. The reversal of 1372057 is 7502731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7502731 = 577 ⋅13003.

It can be written as a sum of positive squares in 2 ways, for example, as 1336336 + 35721 = 1156^2 + 189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1372057 is a prime.

It is a super-2 number, since 2×1372057² = 3765080822498, which contains 22 as substring.

It is a Duffinian number.

1372057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1372051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (343629).

2^1372057 is an apocalyptic number.

It is an amenable number.

1372057 is a deficient number, since it is larger than the sum of its proper divisors (2459).

1372057 is an equidigital number, since it uses as much as digits as its factorization.

1372057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 1372057 is about 1171.3483683345. The cubic root of 1372057 is about 111.1196124236.

Adding to 1372057 its reverse (7502731), we get a palindrome (8874788).

The spelling of 1372057 in words is "one million, three hundred seventy-two thousand, fifty-seven".