51618053 has 4 divisors (see below), whose sum is σ = 51659328. Its totient is φ = 51576780.

The previous prime is 51618037. The next prime is 51618089. The reversal of 51618053 is 35081615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51618053 - 2⁴ = 51618037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51618023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18701 + ... + 21282.

It is an arithmetic number, because the mean of its divisors is an integer number (12914832).

Almost surely, 2^51618053 is an apocalyptic number.

It is an amenable number.

51618053 is a deficient number, since it is larger than the sum of its proper divisors (41275).

51618053 is a wasteful number, since it uses less digits than its factorization.

51618053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41274.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 51618053 is about 7184.5704812466. The cubic root of 51618053 is about 372.3350091351.

Adding to 51618053 its reverse (35081615), we get a palindrome (86699668).

The spelling of 51618053 in words is "fifty-one million, six hundred eighteen thousand, fifty-three".