73422551 has 4 divisors (see below), whose sum is σ = 73448352. Its totient is φ = 73396752.

The previous prime is 73422523. The next prime is 73422563. The reversal of 73422551 is 15522437.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15522437 = 7 ⋅2217491.

It is a cyclic number.

It is not a de Polignac number, because 73422551 - 2¹⁴ = 73406167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73424551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8015 + ... + 14528.

It is an arithmetic number, because the mean of its divisors is an integer number (18362088).

Almost surely, 2^73422551 is an apocalyptic number.

73422551 is a deficient number, since it is larger than the sum of its proper divisors (25801).

73422551 is a wasteful number, since it uses less digits than its factorization.

73422551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25800.

The product of its digits is 8400, while the sum is 29.

The square root of 73422551 is about 8568.6959918065. The cubic root of 73422551 is about 418.7387541051.

Adding to 73422551 its reverse (15522437), we get a palindrome (88944988).

The spelling of 73422551 in words is "seventy-three million, four hundred twenty-two thousand, five hundred fifty-one".