51268155 has 16 divisors (see below), whose sum is σ = 82386720. Its totient is φ = 27223808.

The previous prime is 51268153. The next prime is 51268157. The reversal of 51268155 is 55186215.

51268155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51268153) and next prime (51268157).

It is a cyclic number.

It is not a de Polignac number, because 51268155 - 2¹ = 51268153 is a prime.

It is a super-4 number, since 4×51268155⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (51268153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3840 + ... + 10829.

It is an arithmetic number, because the mean of its divisors is an integer number (5149170).

Almost surely, 2^51268155 is an apocalyptic number.

51268155 is a deficient number, since it is larger than the sum of its proper divisors (31118565).

51268155 is a wasteful number, since it uses less digits than its factorization.

51268155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14910.

The product of its digits is 12000, while the sum is 33.

The square root of 51268155 is about 7160.1784195647. The cubic root of 51268155 is about 371.4917979504.

The spelling of 51268155 in words is "fifty-one million, two hundred sixty-eight thousand, one hundred fifty-five".