51156122 has 8 divisors (see below), whose sum is σ = 76768500. Its totient is φ = 25566624.

The previous prime is 51156121. The next prime is 51156143. The reversal of 51156122 is 22165115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51136801 + 19321 = 7151^2 + 139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51156121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1904 + ... + 10292.

Almost surely, 2^51156122 is an apocalyptic number.

51156122 is a deficient number, since it is larger than the sum of its proper divisors (25612378).

51156122 is a wasteful number, since it uses less digits than its factorization.

51156122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11440.

The product of its digits is 600, while the sum is 23.

The square root of 51156122 is about 7152.3508023586. The cubic root of 51156122 is about 371.2210015630.

The spelling of 51156122 in words is "fifty-one million, one hundred fifty-six thousand, one hundred twenty-two".