73971552 has 24 divisors (see below), whose sum is σ = 194175576. Its totient is φ = 24657152.

The previous prime is 73971533. The next prime is 73971577. The reversal of 73971552 is 25517937.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 73971552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385173 + ... + 385364.

It is an arithmetic number, because the mean of its divisors is an integer number (8090649).

Almost surely, 2^73971552 is an apocalyptic number.

It is an amenable number.

73971552 is an abundant number, since it is smaller than the sum of its proper divisors (120204024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73971552 is a wasteful number, since it uses less digits than its factorization.

73971552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770550 (or 770542 counting only the distinct ones).

The product of its digits is 66150, while the sum is 39.

The square root of 73971552 is about 8600.6716016832. The cubic root of 73971552 is about 419.7798392621.

The spelling of 73971552 in words is "seventy-three million, nine hundred seventy-one thousand, five hundred fifty-two".