73138575 has 12 divisors (see below), whose sum is σ = 120922568. Its totient is φ = 39007200.

The previous prime is 73138567. The next prime is 73138649. The reversal of 73138575 is 57583137.

It is not a de Polignac number, because 73138575 - 2³ = 73138567 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 487516 + ... + 487665.

Almost surely, 2^73138575 is an apocalyptic number.

73138575 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

73138575 is a deficient number, since it is larger than the sum of its proper divisors (47783993).

73138575 is a wasteful number, since it uses less digits than its factorization.

73138575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975194 (or 975189 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 73138575 is about 8552.1093889169. The cubic root of 73138575 is about 418.1982054141.

The spelling of 73138575 in words is "seventy-three million, one hundred thirty-eight thousand, five hundred seventy-five".