49555421 has 2 divisors, whose sum is σ = 49555422. Its totient is φ = 49555420.

The previous prime is 49555351. The next prime is 49555427. The reversal of 49555421 is 12455594.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37576900 + 11978521 = 6130^2 + 3461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49555421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49555427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24777710 + 24777711.

It is an arithmetic number, because the mean of its divisors is an integer number (24777711).

Almost surely, 2^49555421 is an apocalyptic number.

It is an amenable number.

49555421 is a deficient number, since it is larger than the sum of its proper divisors (1).

49555421 is an equidigital number, since it uses as much as digits as its factorization.

49555421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

The square root of 49555421 is about 7039.5611368891. The cubic root of 49555421 is about 367.3080021977.

The spelling of 49555421 in words is "forty-nine million, five hundred fifty-five thousand, four hundred twenty-one".