73554973 has 2 divisors, whose sum is σ = 73554974. Its totient is φ = 73554972.

The previous prime is 73554931. The next prime is 73555007. The reversal of 73554973 is 37945537.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66145689 + 7409284 = 8133^2 + 2722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73554973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73554913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36777486 + 36777487.

It is an arithmetic number, because the mean of its divisors is an integer number (36777487).

Almost surely, 2^73554973 is an apocalyptic number.

It is an amenable number.

73554973 is a deficient number, since it is larger than the sum of its proper divisors (1).

73554973 is an equidigital number, since it uses as much as digits as its factorization.

73554973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 43.

The square root of 73554973 is about 8576.4195909482. The cubic root of 73554973 is about 418.9903431149.

The spelling of 73554973 in words is "seventy-three million, five hundred fifty-four thousand, nine hundred seventy-three".