53491773 has 8 divisors (see below), whose sum is σ = 71735328. Its totient is φ = 35454704.

The previous prime is 53491729. The next prime is 53491777. The reversal of 53491773 is 37719435.

It is a happy number.

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 53491773 - 2²⁵ = 19937341 is a prime.

It is a super-2 number, since 2×53491773² = 5722739557367058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53491777) 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, 51015 + ... + 52052.

It is an arithmetic number, because the mean of its divisors is an integer number (8966916).

Almost surely, 2^53491773 is an apocalyptic number.

It is an amenable number.

53491773 is a deficient number, since it is larger than the sum of its proper divisors (18243555).

53491773 is a wasteful number, since it uses less digits than its factorization.

53491773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103243.

The product of its digits is 79380, while the sum is 39.

The square root of 53491773 is about 7313.8070113997. The cubic root of 53491773 is about 376.7867866387.

The spelling of 53491773 in words is "fifty-three million, four hundred ninety-one thousand, seven hundred seventy-three".