1951597 has 2 divisors, whose sum is σ = 1951598. Its totient is φ = 1951596.

The previous prime is 1951591. The next prime is 1951601. The reversal of 1951597 is 7951591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1687401 + 264196 = 1299^2 + 514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1951597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975798 + 975799.

It is an arithmetic number, because the mean of its divisors is an integer number (975799).

2^1951597 is an apocalyptic number.

It is an amenable number.

1951597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951597 is an equidigital number, since it uses as much as digits as its factorization.

1951597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 37.

The square root of 1951597 is about 1396.9957050757. The cubic root of 1951597 is about 124.9673941623.

The spelling of 1951597 in words is "one million, nine hundred fifty-one thousand, five hundred ninety-seven".