2051552331 has 6 divisors (see below), whose sum is σ = 2963353380. Its totient is φ = 1367701548.

The previous prime is 2051552323. The next prime is 2051552359. The reversal of 2051552331 is 1332551502.

It is a happy number.

It is not a de Polignac number, because 2051552331 - 2³ = 2051552323 is a prime.

It is a super-2 number, since 2×2051552331² = 8417733933663067122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2051552295 and 2051552304.

It is not an unprimeable number, because it can be changed into a prime (2051552381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113975121 + ... + 113975138.

It is an arithmetic number, because the mean of its divisors is an integer number (493892230).

Almost surely, 2^2051552331 is an apocalyptic number.

2051552331 is a deficient number, since it is larger than the sum of its proper divisors (911801049).

2051552331 is a wasteful number, since it uses less digits than its factorization.

2051552331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227950265 (or 227950262 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 2051552331 is about 45294.0650747976. The cubic root of 2051552331 is about 1270.6546588622.

The spelling of 2051552331 in words is "two billion, fifty-one million, five hundred fifty-two thousand, three hundred thirty-one".