73145655 has 24 divisors (see below), whose sum is σ = 138312720. Its totient is φ = 35464320.

The previous prime is 73145621. The next prime is 73145693. The reversal of 73145655 is 55654137.

It is not a de Polignac number, because 73145655 - 2¹⁵ = 73112887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73390 + ... + 74379.

It is an arithmetic number, because the mean of its divisors is an integer number (5763030).

Almost surely, 2^73145655 is an apocalyptic number.

73145655 is a deficient number, since it is larger than the sum of its proper divisors (65167065).

73145655 is a wasteful number, since it uses less digits than its factorization.

73145655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147791 (or 147788 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 73145655 is about 8552.5233118653. The cubic root of 73145655 is about 418.2116991952.

The spelling of 73145655 in words is "seventy-three million, one hundred forty-five thousand, six hundred fifty-five".