53451660 has 24 divisors (see below), whose sum is σ = 149664816. Its totient is φ = 14253760.

The previous prime is 53451649. The next prime is 53451661. The reversal of 53451660 is 6615435.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (53451661) 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, 445371 + ... + 445490.

It is an arithmetic number, because the mean of its divisors is an integer number (6236034).

Almost surely, 2^53451660 is an apocalyptic number.

It is an amenable number.

53451660 is an abundant number, since it is smaller than the sum of its proper divisors (96213156).

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

53451660 is a wasteful number, since it uses less digits than its factorization.

53451660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890873 (or 890871 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 53451660 is about 7311.0642180192. The cubic root of 53451660 is about 376.6925800778.

The spelling of 53451660 in words is "fifty-three million, four hundred fifty-one thousand, six hundred sixty".