51667553 has 8 divisors (see below), whose sum is σ = 60422208. Its totient is φ = 43256304.

The previous prime is 51667547. The next prime is 51667571. The reversal of 51667553 is 35576615.

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

It is not a de Polignac number, because 51667553 - 2⁶ = 51667489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51667543) 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, 85526 + ... + 86127.

It is an arithmetic number, because the mean of its divisors is an integer number (7552776).

Almost surely, 2^51667553 is an apocalyptic number.

It is an amenable number.

51667553 is a deficient number, since it is larger than the sum of its proper divisors (8754655).

51667553 is a wasteful number, since it uses less digits than its factorization.

51667553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171703.

The product of its digits is 94500, while the sum is 38.

The square root of 51667553 is about 7188.0145381044. The cubic root of 51667553 is about 372.4539900832.

The spelling of 51667553 in words is "fifty-one million, six hundred sixty-seven thousand, five hundred fifty-three".