73745245 has 36 divisors (see below), whose sum is σ = 107801820. Its totient is φ = 48284544.

The previous prime is 73745237. The next prime is 73745261. The reversal of 73745245 is 54254737.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18896409 + 54848836 = 4347^2 + 7406^2 .

It is not a de Polignac number, because 73745245 - 2³ = 73745237 is a prime.

It is a super-2 number, since 2×73745245² = 10876722320220050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 129321 + ... + 129889.

It is an arithmetic number, because the mean of its divisors is an integer number (2994495).

Almost surely, 2^73745245 is an apocalyptic number.

It is an amenable number.

73745245 is a deficient number, since it is larger than the sum of its proper divisors (34056575).

73745245 is a wasteful number, since it uses less digits than its factorization.

73745245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 604 counting only the distinct ones).

The product of its digits is 117600, while the sum is 37.

The square root of 73745245 is about 8587.5051673929. The cubic root of 73745245 is about 419.3513134395.

The spelling of 73745245 in words is "seventy-three million, seven hundred forty-five thousand, two hundred forty-five".