51151205 has 16 divisors (see below), whose sum is σ = 72048000. Its totient is φ = 34126272.

The previous prime is 51151153. The next prime is 51151207. The reversal of 51151205 is 50215115.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51151205 - 2¹⁰ = 51150181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151207) 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, 18455 + ... + 21044.

It is an arithmetic number, because the mean of its divisors is an integer number (4503000).

Almost surely, 2^51151205 is an apocalyptic number.

It is an amenable number.

51151205 is a deficient number, since it is larger than the sum of its proper divisors (20896795).

51151205 is a wasteful number, since it uses less digits than its factorization.

51151205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39548.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 51151205 is about 7152.0070609585. The cubic root of 51151205 is about 371.2091075669.

The spelling of 51151205 in words is "fifty-one million, one hundred fifty-one thousand, two hundred five".