49697021 has 4 divisors (see below), whose sum is σ = 54214944. Its totient is φ = 45179100.

The previous prime is 49697003. The next prime is 49697099. The reversal of 49697021 is 12079694.

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 49697021 - 2¹⁴ = 49680637 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 (49697321) 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, 2258945 + ... + 2258966.

It is an arithmetic number, because the mean of its divisors is an integer number (13553736).

Almost surely, 2^49697021 is an apocalyptic number.

It is an amenable number.

49697021 is a deficient number, since it is larger than the sum of its proper divisors (4517923).

49697021 is a wasteful number, since it uses less digits than its factorization.

49697021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517922.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 49697021 is about 7049.6114077302. The cubic root of 49697021 is about 367.6575189735.

The spelling of 49697021 in words is "forty-nine million, six hundred ninety-seven thousand, twenty-one".