157220485 has 8 divisors (see below), whose sum is σ = 191757816. Its totient is φ = 123714240.

The previous prime is 157220461. The next prime is 157220489. The reversal of 157220485 is 584022751.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18122049 + 139098436 = 4257^2 + 11794^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157220485 - 2²¹ = 155123333 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 157220485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157220489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257434 + ... + 258043.

It is an arithmetic number, because the mean of its divisors is an integer number (23969727).

Almost surely, 2^157220485 is an apocalyptic number.

It is an amenable number.

157220485 is a deficient number, since it is larger than the sum of its proper divisors (34537331).

157220485 is an equidigital number, since it uses as much as digits as its factorization.

157220485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515543.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 157220485 is about 12538.7593086398. The cubic root of 157220485 is about 539.7214898967.

The spelling of 157220485 in words is "one hundred fifty-seven million, two hundred twenty thousand, four hundred eighty-five".