73551272 has 16 divisors (see below), whose sum is σ = 138484500. Its totient is φ = 36622080.

The previous prime is 73551271. The next prime is 73551277. The reversal of 73551272 is 27215537.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 9647236 = 7994^2 + 3106^2 .

It is a super-2 number, since 2×73551272² = 10819579225635968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73551271) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17147 + ... + 21002.

Almost surely, 2^73551272 is an apocalyptic number.

It is an amenable number.

73551272 is a deficient number, since it is larger than the sum of its proper divisors (64933228).

73551272 is a wasteful number, since it uses less digits than its factorization.

73551272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38396 (or 38392 counting only the distinct ones).

The product of its digits is 14700, while the sum is 32.

The square root of 73551272 is about 8576.2038222048. The cubic root of 73551272 is about 418.9833156758.

The spelling of 73551272 in words is "seventy-three million, five hundred fifty-one thousand, two hundred seventy-two".