7475503421 has 4 divisors (see below), whose sum is σ = 7677544092. Its totient is φ = 7273462752.

The previous prime is 7475503379. The next prime is 7475503439. The reversal of 7475503421 is 1243055747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2818123396 + 4657380025 = 53086^2 + 68245^2 .

It is a cyclic number.

It is not a de Polignac number, because 7475503421 - 2¹⁴ = 7475487037 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 (7475506421) 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, 101020280 + ... + 101020353.

It is an arithmetic number, because the mean of its divisors is an integer number (1919386023).

Almost surely, 2^7475503421 is an apocalyptic number.

It is an amenable number.

7475503421 is a deficient number, since it is larger than the sum of its proper divisors (202040671).

7475503421 is a wasteful number, since it uses less digits than its factorization.

7475503421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202040670.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 7475503421 is about 86460.9936387502. The cubic root of 7475503421 is about 1955.3003658039.

The spelling of 7475503421 in words is "seven billion, four hundred seventy-five million, five hundred three thousand, four hundred twenty-one".