1955131 has 2 divisors, whose sum is σ = 1955132. Its totient is φ = 1955130.

The previous prime is 1955123. The next prime is 1955137. The reversal of 1955131 is 1315591.

It is a strong prime.

It is an emirp because it is prime and its reverse (1315591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1955131 - 2³ = 1955123 is a prime.

It is a super-2 number, since 2×1955131² = 7645074454322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1955096 and 1955105.

It is not a weakly prime, because it can be changed into another prime (1955137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977565 + 977566.

It is an arithmetic number, because the mean of its divisors is an integer number (977566).

2^1955131 is an apocalyptic number.

1955131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955131 is an equidigital number, since it uses as much as digits as its factorization.

1955131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 25.

The square root of 1955131 is about 1398.2599901306. The cubic root of 1955131 is about 125.0427800240.

The spelling of 1955131 in words is "one million, nine hundred fifty-five thousand, one hundred thirty-one".