52391403 has 12 divisors (see below), whose sum is σ = 76230648. Its totient is φ = 34671840.

The previous prime is 52391393. The next prime is 52391431. The reversal of 52391403 is 30419325.

It is not a de Polignac number, because 52391403 - 2²⁰ = 51342827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52391453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20013 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (6352554).

Almost surely, 2^52391403 is an apocalyptic number.

52391403 is a deficient number, since it is larger than the sum of its proper divisors (23839245).

52391403 is a wasteful number, since it uses less digits than its factorization.

52391403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42634 (or 42631 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 52391403 is about 7238.1905888143. The cubic root of 52391403 is about 374.1852604807.

The spelling of 52391403 in words is "fifty-two million, three hundred ninety-one thousand, four hundred three".