51612151 has 8 divisors (see below), whose sum is σ = 55797680. Its totient is φ = 47573568.

The previous prime is 51612149. The next prime is 51612163. The reversal of 51612151 is 15121615.

It is a happy number.

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

It is not a de Polignac number, because 51612151 - 2¹ = 51612149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51612191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36006 + ... + 37411.

It is an arithmetic number, because the mean of its divisors is an integer number (6974710).

Almost surely, 2^51612151 is an apocalyptic number.

51612151 is a deficient number, since it is larger than the sum of its proper divisors (4185529).

51612151 is a wasteful number, since it uses less digits than its factorization.

51612151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73473.

The product of its digits is 300, while the sum is 22.

The square root of 51612151 is about 7184.1597281798. The cubic root of 51612151 is about 372.3208176856.

Adding to 51612151 its reverse (15121615), we get a palindrome (66733766).

The spelling of 51612151 in words is "fifty-one million, six hundred twelve thousand, one hundred fifty-one".