1957151 has 4 divisors (see below), whose sum is σ = 2236752. Its totient is φ = 1677552.

The previous prime is 1957147. The next prime is 1957157. The reversal of 1957151 is 1517591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1957151 - 2² = 1957147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957157) 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, 139790 + ... + 139803.

It is an arithmetic number, because the mean of its divisors is an integer number (559188).

2^1957151 is an apocalyptic number.

1957151 is a deficient number, since it is larger than the sum of its proper divisors (279601).

1957151 is an equidigital number, since it uses as much as digits as its factorization.

1957151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279600.

The product of its digits is 1575, while the sum is 29.

The square root of 1957151 is about 1398.9821299788. The cubic root of 1957151 is about 125.0858290535.

The spelling of 1957151 in words is "one million, nine hundred fifty-seven thousand, one hundred fifty-one".