49978001 has 2 divisors, whose sum is σ = 49978002. Its totient is φ = 49978000.

The previous prime is 49977959. The next prime is 49978003. The reversal of 49978001 is 10087994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 11723776 = 6185^2 + 3424^2 .

It is a cyclic number.

It is not a de Polignac number, because 49978001 - 2⁶ = 49977937 is a prime.

Together with 49978003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49978003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24989000 + 24989001.

It is an arithmetic number, because the mean of its divisors is an integer number (24989001).

Almost surely, 2^49978001 is an apocalyptic number.

It is an amenable number.

49978001 is a deficient number, since it is larger than the sum of its proper divisors (1).

49978001 is an equidigital number, since it uses as much as digits as its factorization.

49978001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 49978001 is about 7069.5120765156. The cubic root of 49978001 is about 368.3491119321.

The spelling of 49978001 in words is "forty-nine million, nine hundred seventy-eight thousand, one".