157878655 has 32 divisors (see below), whose sum is σ = 211595328. Its totient is φ = 112128000.

The previous prime is 157878641. The next prime is 157878661. The reversal of 157878655 is 556878751.

It is a happy number.

It is not a de Polignac number, because 157878655 - 2⁹ = 157878143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538689 + ... + 538981.

It is an arithmetic number, because the mean of its divisors is an integer number (6612354).

Almost surely, 2^157878655 is an apocalyptic number.

157878655 is a deficient number, since it is larger than the sum of its proper divisors (53716673).

157878655 is a wasteful number, since it uses less digits than its factorization.

157878655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its digits is 2352000, while the sum is 52.

The square root of 157878655 is about 12564.9773179262. The cubic root of 157878655 is about 540.4735843127.

It can be divided in two parts, 15787 and 8655, that added together give a palindrome (24442).

The spelling of 157878655 in words is "one hundred fifty-seven million, eight hundred seventy-eight thousand, six hundred fifty-five".