49997556 has 72 divisors (see below), whose sum is σ = 145308800. Its totient is φ = 14198976.

The previous prime is 49997509. The next prime is 49997567. The reversal of 49997556 is 65579994.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 49650 + ... + 50646.

Almost surely, 2^49997556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49997556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72654400).

49997556 is an abundant number, since it is smaller than the sum of its proper divisors (95311244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49997556 is a wasteful number, since it uses less digits than its factorization.

49997556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1208 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 49997556 is about 7070.8949928563. The cubic root of 49997556 is about 368.3971472509.

The spelling of 49997556 in words is "forty-nine million, nine hundred ninety-seven thousand, five hundred fifty-six".