157755890 has 32 divisors (see below), whose sum is σ = 288852480. Its totient is φ = 62023104.

The previous prime is 157755887. The next prime is 157755947. The reversal of 157755890 is 98557751.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313379 + ... + 313881.

It is an arithmetic number, because the mean of its divisors is an integer number (9026640).

Almost surely, 2^157755890 is an apocalyptic number.

157755890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157755890 is a deficient number, since it is larger than the sum of its proper divisors (131096590).

157755890 is a wasteful number, since it uses less digits than its factorization.

157755890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 441000, while the sum is 47.

The square root of 157755890 is about 12560.0911620895. The cubic root of 157755890 is about 540.3334588790. Note that the first 3 decimals are identical.

The spelling of 157755890 in words is "one hundred fifty-seven million, seven hundred fifty-five thousand, eight hundred ninety".