7371521573 has 4 divisors (see below), whose sum is σ = 7938561708. Its totient is φ = 6804481440.

The previous prime is 7371521539. The next prime is 7371521609. The reversal of 7371521573 is 3751251737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3751251737 = 54547 ⋅68771.

It can be written as a sum of positive squares in 2 ways, for example, as 4795147009 + 2576374564 = 69247^2 + 50758^2 .

It is a cyclic number.

It is not a de Polignac number, because 7371521573 - 2¹⁰ = 7371520549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7371521573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7371521173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283520048 + ... + 283520073.

It is an arithmetic number, because the mean of its divisors is an integer number (1984640427).

Almost surely, 2^7371521573 is an apocalyptic number.

It is an amenable number.

7371521573 is a deficient number, since it is larger than the sum of its proper divisors (567040135).

7371521573 is a wasteful number, since it uses less digits than its factorization.

7371521573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567040134.

The product of its digits is 154350, while the sum is 41.

The square root of 7371521573 is about 85857.5656130547. The cubic root of 7371521573 is about 1946.1921371263.

The spelling of 7371521573 in words is "seven billion, three hundred seventy-one million, five hundred twenty-one thousand, five hundred seventy-three".