19995552 has 48 divisors (see below), whose sum is σ = 58322880. Its totient is φ = 6664896.

The previous prime is 19995551. The next prime is 19995583. The reversal of 19995552 is 25559991.

19995552 is a `hidden beast` number, since 1 + 9 + 9 + 95 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 19995498 and 19995507.

It is not an unprimeable number, because it can be changed into a prime (19995551) 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, 10708 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (1215060).

Almost surely, 2^19995552 is an apocalyptic number.

19995552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19995552 is an abundant number, since it is smaller than the sum of its proper divisors (38327328).

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

19995552 is a wasteful number, since it uses less digits than its factorization.

19995552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162 (or 23148 counting only the distinct ones).

The product of its digits is 182250, while the sum is 45.

The square root of 19995552 is about 4471.6386258283. The cubic root of 19995552 is about 271.4216372849.

The spelling of 19995552 in words is "nineteen million, nine hundred ninety-five thousand, five hundred fifty-two".