2151651322 has 4 divisors (see below), whose sum is σ = 3227476986. Its totient is φ = 1075825660.

The previous prime is 2151651287. The next prime is 2151651331. The reversal of 2151651322 is 2231561512.

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., 1280279961 + 871371361 = 35781^2 + 29519^2 .

It is a super-2 number, since 2×2151651322² = 9259206822928695368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537912829 + ... + 537912832.

Almost surely, 2^2151651322 is an apocalyptic number.

2151651322 is a deficient number, since it is larger than the sum of its proper divisors (1075825664).

2151651322 is a wasteful number, since it uses less digits than its factorization.

2151651322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075825663.

The product of its digits is 3600, while the sum is 28.

The square root of 2151651322 is about 46385.8957227302. The cubic root of 2151651322 is about 1290.9932302227.

The spelling of 2151651322 in words is "two billion, one hundred fifty-one million, six hundred fifty-one thousand, three hundred twenty-two".