51501150 has 48 divisors (see below), whose sum is σ = 141918000. Its totient is φ = 13733280.

The previous prime is 51501139. The next prime is 51501157. The reversal of 51501150 is 5110515.

51501150 is a `hidden beast` number, since 515 + 0 + 1 + 150 = 666.

51501150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51501157) 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 23 ways as a sum of consecutive naturals, for example, 17725 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (2956625).

Almost surely, 2^51501150 is an apocalyptic number.

51501150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51501150 is an abundant number, since it is smaller than the sum of its proper divisors (90416850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51501150 is a wasteful number, since it uses less digits than its factorization.

51501150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38170 (or 38159 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 51501150 is about 7176.4301710530. The cubic root of 51501150 is about 372.0537123275.

Adding to 51501150 its reverse (5110515), we get a palindrome (56611665).

The spelling of 51501150 in words is "fifty-one million, five hundred one thousand, one hundred fifty".