74551 has 2 divisors, whose sum is σ = 74552. Its totient is φ = 74550.

The previous prime is 74531. The next prime is 74561. The reversal of 74551 is 15547.

74551 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74551 - 2¹¹ = 72503 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37275 + 37276.

It is an arithmetic number, because the mean of its divisors is an integer number (37276).

2⁷⁴⁵⁵¹ is an apocalyptic number.

74551 is a deficient number, since it is larger than the sum of its proper divisors (1).

74551 is an equidigital number, since it uses as much as digits as its factorization.

74551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 22.

The square root of 74551 is about 273.0402900672. The cubic root of 74551 is about 42.0873089296.

Subtracting from 74551 its sum of digits (22), we obtain a square (74529 = 273²).

It can be divided in two parts, 74 and 551, that added together give a 4-th power (625 = 5⁴).

The spelling of 74551 in words is "seventy-four thousand, five hundred fifty-one".