48778157 has 2 divisors, whose sum is σ = 48778158. Its totient is φ = 48778156.

The previous prime is 48778139. The next prime is 48778181. The reversal of 48778157 is 75187784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38576521 + 10201636 = 6211^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 48778157 - 2⁸ = 48777901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48778127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24389078 + 24389079.

It is an arithmetic number, because the mean of its divisors is an integer number (24389079).

Almost surely, 2^48778157 is an apocalyptic number.

It is an amenable number.

48778157 is a deficient number, since it is larger than the sum of its proper divisors (1).

48778157 is an equidigital number, since it uses as much as digits as its factorization.

48778157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 439040, while the sum is 47.

The square root of 48778157 is about 6984.1360954666. The cubic root of 48778157 is about 365.3774964778.

The spelling of 48778157 in words is "forty-eight million, seven hundred seventy-eight thousand, one hundred fifty-seven".