2151346 has 4 divisors (see below), whose sum is σ = 3227022. Its totient is φ = 1075672.

The previous prime is 2151337. The next prime is 2151349. The reversal of 2151346 is 6431512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 616225 = 1239^2 + 785^2 .

It is a super-2 number, since 2×2151346² = 9256579223432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2151349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537835 + ... + 537838.

2^2151346 is an apocalyptic number.

2151346 is a deficient number, since it is larger than the sum of its proper divisors (1075676).

2151346 is a wasteful number, since it uses less digits than its factorization.

2151346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075675.

The product of its digits is 720, while the sum is 22.

The square root of 2151346 is about 1466.7467402384. The cubic root of 2151346 is about 129.0932162819.

Adding to 2151346 its reverse (6431512), we get a palindrome (8582858).

The spelling of 2151346 in words is "two million, one hundred fifty-one thousand, three hundred forty-six".