51365577 has 8 divisors (see below), whose sum is σ = 69648480. Its totient is φ = 33663200.

The previous prime is 51365557. The next prime is 51365581. The reversal of 51365577 is 77556315.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51365577 - 2⁶ = 51365513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51365557) 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, 144924 + ... + 145277.

It is an arithmetic number, because the mean of its divisors is an integer number (8706060).

Almost surely, 2^51365577 is an apocalyptic number.

It is an amenable number.

51365577 is a deficient number, since it is larger than the sum of its proper divisors (18282903).

51365577 is a wasteful number, since it uses less digits than its factorization.

51365577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290263.

The product of its digits is 110250, while the sum is 39.

The square root of 51365577 is about 7166.9782335375. The cubic root of 51365577 is about 371.7269574036.

The spelling of 51365577 in words is "fifty-one million, three hundred sixty-five thousand, five hundred seventy-seven".