49720197 has 4 divisors (see below), whose sum is σ = 66293600. Its totient is φ = 33146796.

The previous prime is 49720183. The next prime is 49720211. The reversal of 49720197 is 79102794.

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 an interprime number because it is at equal distance from previous prime (49720183) and next prime (49720211).

It is not a de Polignac number, because 49720197 - 2¹² = 49716101 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 (49720127) 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, 8286697 + ... + 8286702.

It is an arithmetic number, because the mean of its divisors is an integer number (16573400).

Almost surely, 2^49720197 is an apocalyptic number.

It is an amenable number.

49720197 is a deficient number, since it is larger than the sum of its proper divisors (16573403).

49720197 is a wasteful number, since it uses less digits than its factorization.

49720197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16573402.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 49720197 is about 7051.2549946800. The cubic root of 49720197 is about 367.7146619456.

The spelling of 49720197 in words is "forty-nine million, seven hundred twenty thousand, one hundred ninety-seven".