53140949 has 4 divisors (see below), whose sum is σ = 53155980. Its totient is φ = 53125920.

The previous prime is 53140939. The next prime is 53140957. The reversal of 53140949 is 94904135.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 36084049 + 17056900 = 6007^2 + 4130^2 .

It is a cyclic number.

It is not a de Polignac number, because 53140949 - 2¹⁶ = 53075413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53140909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (13288995).

Almost surely, 2^53140949 is an apocalyptic number.

It is an amenable number.

53140949 is a deficient number, since it is larger than the sum of its proper divisors (15031).

53140949 is an equidigital number, since it uses as much as digits as its factorization.

53140949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15030.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 53140949 is about 7289.7838788266. The cubic root of 53140949 is about 375.9612647776.

The spelling of 53140949 in words is "fifty-three million, one hundred forty thousand, nine hundred forty-nine".