4721535 has 48 divisors (see below), whose sum is σ = 10081344. Its totient is φ = 1990656.

The previous prime is 4721531. The next prime is 4721569. The reversal of 4721535 is 5351274.

It is a happy number.

It is not a de Polignac number, because 4721535 - 2² = 4721531 is a prime.

It is a nialpdrome in base 13.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 4721499 and 4721508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3519 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (210028).

Almost surely, 2^4721535 is an apocalyptic number.

4721535 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4721535 is an abundant number, since it is smaller than the sum of its proper divisors (5359809).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4721535 is a wasteful number, since it uses less digits than its factorization.

4721535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1181 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 4721535 is about 2172.9093400324. The cubic root of 4721535 is about 167.7623126868.

The spelling of 4721535 in words is "four million, seven hundred twenty-one thousand, five hundred thirty-five".