1001951 has 4 divisors (see below), whose sum is σ = 1034304. Its totient is φ = 969600.

The previous prime is 1001947. The next prime is 1001953. The reversal of 1001951 is 1591001.

It is a happy number.

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 1001951 - 2² = 1001947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001953) 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, 16130 + ... + 16191.

It is an arithmetic number, because the mean of its divisors is an integer number (258576).

2^1001951 is an apocalyptic number.

1001951 is a deficient number, since it is larger than the sum of its proper divisors (32353).

1001951 is an equidigital number, since it uses as much as digits as its factorization.

1001951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32352.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 1001951 is about 1000.9750246635. The cubic root of 1001951 is about 100.0649910858.

Adding to 1001951 its reverse (1591001), we get a palindrome (2592952).

The spelling of 1001951 in words is "one million, one thousand, nine hundred fifty-one".