157996550 has 12 divisors (see below), whose sum is σ = 293873676. Its totient is φ = 63198600.

The previous prime is 157996547. The next prime is 157996567. The reversal of 157996550 is 55699751.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 157996495 and 157996504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1579916 + ... + 1580015.

It is an arithmetic number, because the mean of its divisors is an integer number (24489473).

Almost surely, 2^157996550 is an apocalyptic number.

157996550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157996550 is a deficient number, since it is larger than the sum of its proper divisors (135877126).

157996550 is a wasteful number, since it uses less digits than its factorization.

157996550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159943 (or 3159938 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 47.

The square root of 157996550 is about 12569.6678555959. The cubic root of 157996550 is about 540.6080827121.

The spelling of 157996550 in words is "one hundred fifty-seven million, nine hundred ninety-six thousand, five hundred fifty".