53149930 has 8 divisors (see below), whose sum is σ = 95669892. Its totient is φ = 21259968.

The previous prime is 53149919. The next prime is 53149931. The reversal of 53149930 is 3994135.

It can be written as a sum of positive squares in 2 ways, for example, as 50083929 + 3066001 = 7077^2 + 1751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53149931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657487 + ... + 2657506.

Almost surely, 2^53149930 is an apocalyptic number.

53149930 is a deficient number, since it is larger than the sum of its proper divisors (42519962).

53149930 is a wasteful number, since it uses less digits than its factorization.

53149930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315000.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 53149930 is about 7290.3998518600. The cubic root of 53149930 is about 375.9824431594.

The spelling of 53149930 in words is "fifty-three million, one hundred forty-nine thousand, nine hundred thirty".