148457857 has 4 divisors (see below), whose sum is σ = 148581460. Its totient is φ = 148334256.

The previous prime is 148457839. The next prime is 148457879. The reversal of 148457857 is 758754841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64625521 + 83832336 = 8039^2 + 9156^2 .

It is a cyclic number.

It is not a de Polignac number, because 148457857 - 2²³ = 140069249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148457857.

It is not an unprimeable number, because it can be changed into a prime (148457807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59982 + ... + 62407.

It is an arithmetic number, because the mean of its divisors is an integer number (37145365).

Almost surely, 2^148457857 is an apocalyptic number.

It is an amenable number.

148457857 is a deficient number, since it is larger than the sum of its proper divisors (123603).

148457857 is a wasteful number, since it uses less digits than its factorization.

148457857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123602.

The product of its digits is 1254400, while the sum is 49.

The square root of 148457857 is about 12184.3283360225. The cubic root of 148457857 is about 529.5021514618.

The spelling of 148457857 in words is "one hundred forty-eight million, four hundred fifty-seven thousand, eight hundred fifty-seven".