73555090 has 64 divisors (see below), whose sum is σ = 161927424. Its totient is φ = 23482368.

The previous prime is 73555087. The next prime is 73555103. The reversal of 73555090 is 9055537.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134197 + ... + 134743.

It is an arithmetic number, because the mean of its divisors is an integer number (2530116).

Almost surely, 2^73555090 is an apocalyptic number.

73555090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

73555090 is an abundant number, since it is smaller than the sum of its proper divisors (88372334).

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

73555090 is a wasteful number, since it uses less digits than its factorization.

73555090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 73555090 is about 8576.4264119737. The cubic root of 73555090 is about 418.9905652700.

The spelling of 73555090 in words is "seventy-three million, five hundred fifty-five thousand, ninety".