49013021 has 4 divisors (see below), whose sum is σ = 49208544. Its totient is φ = 48817500.

The previous prime is 49013017. The next prime is 49013087. The reversal of 49013021 is 12031094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49013021 - 2² = 49013017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49012984 and 49013002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49013221) 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, 97385 + ... + 97886.

It is an arithmetic number, because the mean of its divisors is an integer number (12302136).

Almost surely, 2^49013021 is an apocalyptic number.

It is an amenable number.

49013021 is a deficient number, since it is larger than the sum of its proper divisors (195523).

49013021 is a wasteful number, since it uses less digits than its factorization.

49013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195522.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 49013021 is about 7000.9300096487. The cubic root of 49013021 is about 365.9629816143.

The spelling of 49013021 in words is "forty-nine million, thirteen thousand, twenty-one".