51951322 has 4 divisors (see below), whose sum is σ = 77926986. Its totient is φ = 25975660.

The previous prime is 51951283. The next prime is 51951343. The reversal of 51951322 is 22315915.

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., 31348801 + 20602521 = 5599^2 + 4539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12987829 + ... + 12987832.

Almost surely, 2^51951322 is an apocalyptic number.

51951322 is a deficient number, since it is larger than the sum of its proper divisors (25975664).

51951322 is a wasteful number, since it uses less digits than its factorization.

51951322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25975663.

The product of its digits is 2700, while the sum is 28.

The square root of 51951322 is about 7207.7265486421. The cubic root of 51951322 is about 373.1346106162.

The spelling of 51951322 in words is "fifty-one million, nine hundred fifty-one thousand, three hundred twenty-two".