53154220 has 72 divisors (see below), whose sum is σ = 131804064. Its totient is φ = 17950464.

The previous prime is 53154217. The next prime is 53154239. The reversal of 53154220 is 2245135.

It is a super-2 number, since 2×53154220² = 5650742207616800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53154191 and 53154200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71169 + ... + 71911.

It is an arithmetic number, because the mean of its divisors is an integer number (1830612).

Almost surely, 2^53154220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53154220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65902032).

53154220 is an abundant number, since it is smaller than the sum of its proper divisors (78649844).

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

53154220 is a wasteful number, since it uses less digits than its factorization.

53154220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 53154220 is about 7290.6940684684. The cubic root of 53154220 is about 375.9925587029.

Adding to 53154220 its reverse (2245135), we get a palindrome (55399355).

The spelling of 53154220 in words is "fifty-three million, one hundred fifty-four thousand, two hundred twenty".