157785150 has 48 divisors (see below), whose sum is σ = 392925744. Its totient is φ = 41902080.

The previous prime is 157785149. The next prime is 157785209. The reversal of 157785150 is 51587751.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 157785099 and 157785108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36504 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (8185953).

Almost surely, 2^157785150 is an apocalyptic number.

157785150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157785150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196462872).

157785150 is an abundant number, since it is smaller than the sum of its proper divisors (235140594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157785150 is a wasteful number, since it uses less digits than its factorization.

157785150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365 (or 4360 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 39.

The square root of 157785150 is about 12561.2559085467. The cubic root of 157785150 is about 540.3668631883.

The spelling of 157785150 in words is "one hundred fifty-seven million, seven hundred eighty-five thousand, one hundred fifty".