2051231545 has 32 divisors (see below), whose sum is σ = 2831402880. Its totient is φ = 1410877440.

The previous prime is 2051231531. The next prime is 2051231557. The reversal of 2051231545 is 5451321502.

It is not a de Polignac number, because 2051231545 - 2¹¹ = 2051229497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 789769 + ... + 792361.

It is an arithmetic number, because the mean of its divisors is an integer number (88481340).

Almost surely, 2^2051231545 is an apocalyptic number.

It is an amenable number.

2051231545 is a deficient number, since it is larger than the sum of its proper divisors (780171335).

2051231545 is a wasteful number, since it uses less digits than its factorization.

2051231545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385.

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

The square root of 2051231545 is about 45290.5237880950. The cubic root of 2051231545 is about 1270.5884277996.

The spelling of 2051231545 in words is "two billion, fifty-one million, two hundred thirty-one thousand, five hundred forty-five".