1351951 has 4 divisors (see below), whose sum is σ = 1398600. Its totient is φ = 1305304.

The previous prime is 1351949. The next prime is 1351957. The reversal of 1351951 is 1591531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1591531 = 23 ⋅69197.

It is a cyclic number.

It is not a de Polignac number, because 1351951 - 2¹ = 1351949 is a prime.

It is a Duffinian number.

1351951 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351957) 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, 23281 + ... + 23338.

It is an arithmetic number, because the mean of its divisors is an integer number (349650).

2^1351951 is an apocalyptic number.

1351951 is a deficient number, since it is larger than the sum of its proper divisors (46649).

1351951 is an equidigital number, since it uses as much as digits as its factorization.

1351951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46648.

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

The square root of 1351951 is about 1162.7342774684. The cubic root of 1351951 is about 110.5741604095.

The spelling of 1351951 in words is "one million, three hundred fifty-one thousand, nine hundred fifty-one".