2551322 has 4 divisors (see below), whose sum is σ = 3826986. Its totient is φ = 1275660.

The previous prime is 2551313. The next prime is 2551349. The reversal of 2551322 is 2231552.

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., 2493241 + 58081 = 1579^2 + 241^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2551294 and 2551303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637829 + ... + 637832.

2^2551322 is an apocalyptic number.

2551322 is a deficient number, since it is larger than the sum of its proper divisors (1275664).

2551322 is a wasteful number, since it uses less digits than its factorization.

2551322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275663.

The product of its digits is 600, while the sum is 20.

The square root of 2551322 is about 1597.2858228883. The cubic root of 2551322 is about 136.6433260424.

Adding to 2551322 its reverse (2231552), we get a palindrome (4782874).

The spelling of 2551322 in words is "two million, five hundred fifty-one thousand, three hundred twenty-two".