72703541 has 4 divisors (see below), whose sum is σ = 72766284. Its totient is φ = 72640800.

The previous prime is 72703531. The next prime is 72703597. The reversal of 72703541 is 14530727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14530727 = 83 ⋅175069.

It can be written as a sum of positive squares in 2 ways, for example, as 65141041 + 7562500 = 8071^2 + 2750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72703541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72703511) 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, 29600 + ... + 31961.

It is an arithmetic number, because the mean of its divisors is an integer number (18191571).

Almost surely, 2^72703541 is an apocalyptic number.

It is an amenable number.

72703541 is a deficient number, since it is larger than the sum of its proper divisors (62743).

72703541 is a wasteful number, since it uses less digits than its factorization.

72703541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62742.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72703541 is about 8526.6371448538. The cubic root of 72703541 is about 417.3673973807.

The spelling of 72703541 in words is "seventy-two million, seven hundred three thousand, five hundred forty-one".