53342991 has 36 divisors (see below), whose sum is σ = 88384608. Its totient is φ = 30880512.

The previous prime is 53342987. The next prime is 53342999. The reversal of 53342991 is 19924335.

It is a happy number.

It is not a de Polignac number, because 53342991 - 2² = 53342987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53342999) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24826 + ... + 26888.

It is an arithmetic number, because the mean of its divisors is an integer number (2455128).

Almost surely, 2^53342991 is an apocalyptic number.

53342991 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53342991 is a deficient number, since it is larger than the sum of its proper divisors (35041617).

53342991 is a wasteful number, since it uses less digits than its factorization.

53342991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2096 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 53342991 is about 7303.6286187073. The cubic root of 53342991 is about 376.4371307118.

The spelling of 53342991 in words is "fifty-three million, three hundred forty-two thousand, nine hundred ninety-one".