951591 has 4 divisors (see below), whose sum is σ = 1268792. Its totient is φ = 634392.

The previous prime is 951589. The next prime is 951623. The reversal of 951591 is 195159.

951591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195159 = 3 ⋅65053.

It is not a de Polignac number, because 951591 - 2¹ = 951589 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (951571) 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, 158596 + ... + 158601.

It is an arithmetic number, because the mean of its divisors is an integer number (317198).

2⁹⁵¹⁵⁹¹ is an apocalyptic number.

951591 is a deficient number, since it is larger than the sum of its proper divisors (317201).

951591 is a wasteful number, since it uses less digits than its factorization.

951591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317200.

The product of its digits is 2025, while the sum is 30.

The square root of 951591 is about 975.4952588301. The cubic root of 951591 is about 98.3596048417.

The spelling of 951591 in words is "nine hundred fifty-one thousand, five hundred ninety-one".