73977503 has 4 divisors (see below), whose sum is σ = 73998840. Its totient is φ = 73956168.

The previous prime is 73977461. The next prime is 73977511. The reversal of 73977503 is 30577937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30577937 = 13 ⋅2352149.

It is a cyclic number.

It is not a de Polignac number, because 73977503 - 2¹⁴ = 73961119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73977593) 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, 4133 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (18499710).

Almost surely, 2^73977503 is an apocalyptic number.

73977503 is a deficient number, since it is larger than the sum of its proper divisors (21337).

73977503 is a wasteful number, since it uses less digits than its factorization.

73977503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21336.

The product of its (nonzero) digits is 138915, while the sum is 41.

The square root of 73977503 is about 8601.0175560802. The cubic root of 73977503 is about 419.7910960348.

The spelling of 73977503 in words is "seventy-three million, nine hundred seventy-seven thousand, five hundred three".