72275503 has 2 divisors, whose sum is σ = 72275504. Its totient is φ = 72275502.

The previous prime is 72275479. The next prime is 72275507. The reversal of 72275503 is 30557227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72275503 - 2⁵ = 72275471 is a prime.

It is the 8502-nd Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72275507) by changing a digit.

It is a nontrivial repunit in base 8501.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36137751 + 36137752.

It is an arithmetic number, because the mean of its divisors is an integer number (36137752).

Almost surely, 2^72275503 is an apocalyptic number.

72275503 is a deficient number, since it is larger than the sum of its proper divisors (1).

72275503 is an equidigital number, since it uses as much as digits as its factorization.

72275503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 72275503 is about 8501.5000441099. The cubic root of 72275503 is about 416.5467090055.

The spelling of 72275503 in words is "seventy-two million, two hundred seventy-five thousand, five hundred three".