52403145 has 32 divisors (see below), whose sum is σ = 87350400. Its totient is φ = 26793984.

The previous prime is 52403119. The next prime is 52403171. The reversal of 52403145 is 54130425.

It is an interprime number because it is at equal distance from previous prime (52403119) and next prime (52403171).

It is not a de Polignac number, because 52403145 - 2⁷ = 52403017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77529 + ... + 78201.

It is an arithmetic number, because the mean of its divisors is an integer number (2729700).

Almost surely, 2^52403145 is an apocalyptic number.

It is an amenable number.

52403145 is a deficient number, since it is larger than the sum of its proper divisors (34947255).

52403145 is a wasteful number, since it uses less digits than its factorization.

52403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 52403145 is about 7239.0016576873. The cubic root of 52403145 is about 374.2132126184.

Subtracting from 52403145 its sum of digits (24), we obtain a square (52403121 = 7239²).

It can be divided in two parts, 5240 and 3145, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 52403145 in words is "fifty-two million, four hundred three thousand, one hundred forty-five".