51545601333 has 12 divisors (see below), whose sum is σ = 74576225100. Its totient is φ = 34307672256.

The previous prime is 51545601307. The next prime is 51545601337. The reversal of 51545601333 is 33310654515.

51545601333 is a `hidden beast` number, since 5 + 1 + 5 + 45 + 601 + 3 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4185831204 + 47359770129 = 64698^2 + 217623^2 .

It is not a de Polignac number, because 51545601333 - 2¹² = 51545597237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51545601337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4666008 + ... + 4677041.

It is an arithmetic number, because the mean of its divisors is an integer number (6214685425).

Almost surely, 2^51545601333 is an apocalyptic number.

It is an amenable number.

51545601333 is a deficient number, since it is larger than the sum of its proper divisors (23030623767).

51545601333 is a wasteful number, since it uses less digits than its factorization.

51545601333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343668 (or 9343665 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 51545601333 in words is "fifty-one billion, five hundred forty-five million, six hundred one thousand, three hundred thirty-three".