72570403 has 2 divisors, whose sum is σ = 72570404. Its totient is φ = 72570402.

The previous prime is 72570389. The next prime is 72570437. The reversal of 72570403 is 30407527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72570403 - 2²⁵ = 39015971 is a prime.

It is not a weakly prime, because it can be changed into another prime (72570203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36285201 + 36285202.

It is an arithmetic number, because the mean of its divisors is an integer number (36285202).

Almost surely, 2^72570403 is an apocalyptic number.

72570403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72570403 is an equidigital number, since it uses as much as digits as its factorization.

72570403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 72570403 is about 8518.8263863046. The cubic root of 72570403 is about 417.1124743808.

The spelling of 72570403 in words is "seventy-two million, five hundred seventy thousand, four hundred three".