51554449 has 8 divisors (see below), whose sum is σ = 52411968. Its totient is φ = 50700720.

The previous prime is 51554443. The next prime is 51554483. The reversal of 51554449 is 94445515.

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 51554449 - 2⁵ = 51554417 is a prime.

It is a super-2 number, since 2×51554449² = 5315722423387202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51554443) 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, 41059 + ... + 42295.

It is an arithmetic number, because the mean of its divisors is an integer number (6551496).

Almost surely, 2^51554449 is an apocalyptic number.

It is an amenable number.

51554449 is a deficient number, since it is larger than the sum of its proper divisors (857519).

51554449 is a wasteful number, since it uses less digits than its factorization.

51554449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895.

The product of its digits is 72000, while the sum is 37.

The square root of 51554449 is about 7180.1426866045. The cubic root of 51554449 is about 372.1820153133.

It can be divided in two parts, 51554 and 449, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 51554449 in words is "fifty-one million, five hundred fifty-four thousand, four hundred forty-nine".