202553421 has 8 divisors (see below), whose sum is σ = 308652864. Its totient is φ = 115744800.

The previous prime is 202553413. The next prime is 202553423. The reversal of 202553421 is 124355202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202553421 - 2³ = 202553413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202553391 and 202553400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202553423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4822680 + ... + 4822721.

It is an arithmetic number, because the mean of its divisors is an integer number (38581608).

Almost surely, 2^202553421 is an apocalyptic number.

202553421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202553421 is a deficient number, since it is larger than the sum of its proper divisors (106099443).

202553421 is an equidigital number, since it uses as much as digits as its factorization.

202553421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645411.

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

The square root of 202553421 is about 14232.1263695907. The cubic root of 202553421 is about 587.2817801893.

The spelling of 202553421 in words is "two hundred two million, five hundred fifty-three thousand, four hundred twenty-one".