51618051 has 12 divisors (see below), whose sum is σ = 74978280. Its totient is φ = 34219788.

The previous prime is 51618037. The next prime is 51618089. The reversal of 51618051 is 15081615.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 51618051 - 2⁵ = 51618019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51618011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288280 + ... + 288458.

It is an arithmetic number, because the mean of its divisors is an integer number (6248190).

Almost surely, 2^51618051 is an apocalyptic number.

51618051 is a deficient number, since it is larger than the sum of its proper divisors (23360229).

51618051 is an frugal number, since it uses more digits than its factorization.

51618051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 51618051 is about 7184.5703420594. The cubic root of 51618051 is about 372.3350043263.

Adding to 51618051 its reverse (15081615), we get a palindrome (66699666).

The spelling of 51618051 in words is "fifty-one million, six hundred eighteen thousand, fifty-one".