51117554 has 8 divisors (see below), whose sum is σ = 76758528. Its totient is φ = 25531380.

The previous prime is 51117533. The next prime is 51117571. The reversal of 51117554 is 45571115.

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

It is a super-2 number, since 2×51117554² = 5226008653885832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11282 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (9594816).

Almost surely, 2^51117554 is an apocalyptic number.

51117554 is a deficient number, since it is larger than the sum of its proper divisors (25640974).

51117554 is a wasteful number, since it uses less digits than its factorization.

51117554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27400.

The product of its digits is 3500, while the sum is 29.

The square root of 51117554 is about 7149.6541175081. The cubic root of 51117554 is about 371.1276868850.

Adding to 51117554 its reverse (45571115), we get a palindrome (96688669).

The spelling of 51117554 in words is "fifty-one million, one hundred seventeen thousand, five hundred fifty-four".