157287073 has 8 divisors (see below), whose sum is σ = 167032800. Its totient is φ = 147688128.

The previous prime is 157287071. The next prime is 157287079. The reversal of 157287073 is 370782751.

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

It is a cyclic number.

It is not a de Polignac number, because 157287073 - 2¹ = 157287071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157287071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34483 + ... + 38776.

It is an arithmetic number, because the mean of its divisors is an integer number (20879100).

Almost surely, 2^157287073 is an apocalyptic number.

It is an amenable number.

157287073 is a deficient number, since it is larger than the sum of its proper divisors (9745727).

157287073 is a wasteful number, since it uses less digits than its factorization.

157287073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73391.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 157287073 is about 12541.4143141832. The cubic root of 157287073 is about 539.7976756897.

It can be divided in two parts, 15728 and 7073, that added together give a square (22801 = 151²).

The spelling of 157287073 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, seventy-three".