53149849 has 16 divisors (see below), whose sum is σ = 57746304. Its totient is φ = 48787200.

The previous prime is 53149843. The next prime is 53149853. The reversal of 53149849 is 94894135.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53149849 - 2¹⁹ = 52625561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53149843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59889 + ... + 60769.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^53149849 is an apocalyptic number.

It is an amenable number.

53149849 is a deficient number, since it is larger than the sum of its proper divisors (4596455).

53149849 is a wasteful number, since it uses less digits than its factorization.

53149849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 155520, while the sum is 43.

The square root of 53149849 is about 7290.3942966070. The cubic root of 53149849 is about 375.9822521614.

The spelling of 53149849 in words is "fifty-three million, one hundred forty-nine thousand, eight hundred forty-nine".