2051432551 has 16 divisors (see below), whose sum is σ = 2549503296. Its totient is φ = 1610205696.

The previous prime is 2051432531. The next prime is 2051432557. The reversal of 2051432551 is 1552341502.

It is a cyclic number.

It is not a de Polignac number, because 2051432551 - 2²⁹ = 1514561639 is a prime.

It is a super-2 number, since 2×2051432551² = 8416751022604735202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051432557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228556 + ... + 237361.

It is an arithmetic number, because the mean of its divisors is an integer number (159343956).

Almost surely, 2^2051432551 is an apocalyptic number.

2051432551 is a deficient number, since it is larger than the sum of its proper divisors (498070745).

2051432551 is a wasteful number, since it uses less digits than its factorization.

2051432551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465978.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2051432551 is about 45292.7428072092. The cubic root of 2051432551 is about 1270.6299292993.

The spelling of 2051432551 in words is "two billion, fifty-one million, four hundred thirty-two thousand, five hundred fifty-one".