49057421 has 4 divisors (see below), whose sum is σ = 56065632. Its totient is φ = 42049212.

The previous prime is 49057403. The next prime is 49057447. The reversal of 49057421 is 12475094.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12475094 = 2 ⋅6237547.

It is a cyclic number.

It is not a de Polignac number, because 49057421 - 2¹⁸ = 48795277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49057471) 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, 3504095 + ... + 3504108.

It is an arithmetic number, because the mean of its divisors is an integer number (14016408).

Almost surely, 2^49057421 is an apocalyptic number.

It is an amenable number.

49057421 is a deficient number, since it is larger than the sum of its proper divisors (7008211).

49057421 is an equidigital number, since it uses as much as digits as its factorization.

49057421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008210.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 49057421 is about 7004.1002991105. The cubic root of 49057421 is about 366.0734546549.

The spelling of 49057421 in words is "forty-nine million, fifty-seven thousand, four hundred twenty-one".