1011951 has 12 divisors (see below), whose sum is σ = 1471080. Its totient is φ = 670320.

The previous prime is 1011947. The next prime is 1011961. The reversal of 1011951 is 1591101.

1011951 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 1011951 - 2² = 1011947 is a prime.

1011951 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1816 + ... + 2306.

It is an arithmetic number, because the mean of its divisors is an integer number (122590).

2^1011951 is an apocalyptic number.

1011951 is a deficient number, since it is larger than the sum of its proper divisors (459129).

1011951 is a wasteful number, since it uses less digits than its factorization.

1011951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 18.

The square root of 1011951 is about 1005.9577525920. The cubic root of 1011951 is about 100.3967901600.

The spelling of 1011951 in words is "one million, eleven thousand, nine hundred fifty-one".