52155421 has 8 divisors (see below), whose sum is σ = 54509760. Its totient is φ = 49808352.

The previous prime is 52155407. The next prime is 52155449. The reversal of 52155421 is 12455125.

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

It is a cyclic number.

It is not a de Polignac number, because 52155421 - 2¹¹ = 52153373 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 (52155401) 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, 17206 + ... + 20008.

It is an arithmetic number, because the mean of its divisors is an integer number (6813720).

Almost surely, 2^52155421 is an apocalyptic number.

It is an amenable number.

52155421 is a deficient number, since it is larger than the sum of its proper divisors (2354339).

52155421 is a wasteful number, since it uses less digits than its factorization.

52155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635.

The product of its digits is 2000, while the sum is 25.

The square root of 52155421 is about 7221.8710179565. The cubic root of 52155421 is about 373.6226115899.

The spelling of 52155421 in words is "fifty-two million, one hundred fifty-five thousand, four hundred twenty-one".