109012554 has 120 divisors (see below), whose sum is σ = 293977728. Its totient is φ = 30073680.

The previous prime is 109012549. The next prime is 109012583. The reversal of 109012554 is 455210901.

109012554 is a `hidden beast` number, since 10 + 90 + 12 + 554 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 245857 + ... + 246299.

Almost surely, 2^109012554 is an apocalyptic number.

109012554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109012554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146988864).

109012554 is an abundant number, since it is smaller than the sum of its proper divisors (184965174).

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

109012554 is a wasteful number, since it uses less digits than its factorization.

109012554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 109012554 is about 10440.9077191593. The cubic root of 109012554 is about 477.7039564369.

The spelling of 109012554 in words is "one hundred nine million, twelve thousand, five hundred fifty-four".