1957081 has 4 divisors (see below), whose sum is σ = 2236672. Its totient is φ = 1677492.

The previous prime is 1957079. The next prime is 1957097. The reversal of 1957081 is 1807591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1957081 - 2¹ = 1957079 is a prime.

It is a super-2 number, since 2×1957081² = 7660332081122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1957031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139785 + ... + 139798.

It is an arithmetic number, because the mean of its divisors is an integer number (559168).

2^1957081 is an apocalyptic number.

It is an amenable number.

1957081 is a deficient number, since it is larger than the sum of its proper divisors (279591).

1957081 is an equidigital number, since it uses as much as digits as its factorization.

1957081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279590.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1957081 is about 1398.9571115656. The cubic root of 1957081 is about 125.0843377510.

The spelling of 1957081 in words is "one million, nine hundred fifty-seven thousand, eighty-one".