53447494 has 12 divisors (see below), whose sum is σ = 84614004. Its totient is φ = 25316892.

The previous prime is 53447491. The next prime is 53447497. The reversal of 53447494 is 49474435.

It is an interprime number because it is at equal distance from previous prime (53447491) and next prime (53447497).

It is a super-2 number, since 2×53447494² = 5713269229760072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53447491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36292 + ... + 37735.

It is an arithmetic number, because the mean of its divisors is an integer number (7051167).

Almost surely, 2^53447494 is an apocalyptic number.

53447494 is a deficient number, since it is larger than the sum of its proper divisors (31166510).

53447494 is a wasteful number, since it uses less digits than its factorization.

53447494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74067 (or 74048 counting only the distinct ones).

The product of its digits is 241920, while the sum is 40.

The square root of 53447494 is about 7310.7793018255. The cubic root of 53447494 is about 376.6827934029.

The spelling of 53447494 in words is "fifty-three million, four hundred forty-seven thousand, four hundred ninety-four".