51887554 has 8 divisors (see below), whose sum is σ = 80515260. Its totient is φ = 25049136.

The previous prime is 51887527. The next prime is 51887567. The reversal of 51887554 is 45578815.

It can be written as a sum of positive squares in 2 ways, for example, as 51509329 + 378225 = 7177^2 + 615^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51887554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447249 + ... + 447364.

Almost surely, 2^51887554 is an apocalyptic number.

51887554 is a deficient number, since it is larger than the sum of its proper divisors (28627706).

51887554 is a wasteful number, since it uses less digits than its factorization.

51887554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894644.

The product of its digits is 224000, while the sum is 43.

The square root of 51887554 is about 7203.3016041257. The cubic root of 51887554 is about 372.9818792453.

It can be divided in two parts, 51887 and 554, that added together give a square (52441 = 229²).

The spelling of 51887554 in words is "fifty-one million, eight hundred eighty-seven thousand, five hundred fifty-four".