1215060157 has 4 divisors (see below), whose sum is σ = 1229699520. Its totient is φ = 1200420796.

The previous prime is 1215060151. The next prime is 1215060163. The reversal of 1215060157 is 7510605121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7510605121 = 127 ⋅59138623.

It is an interprime number because it is at equal distance from previous prime (1215060151) and next prime (1215060163).

It is a cyclic number.

It is not a de Polignac number, because 1215060157 - 2¹¹ = 1215058109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215060151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7319557 + ... + 7319722.

It is an arithmetic number, because the mean of its divisors is an integer number (307424880).

Almost surely, 2^1215060157 is an apocalyptic number.

It is an amenable number.

1215060157 is a deficient number, since it is larger than the sum of its proper divisors (14639363).

1215060157 is an equidigital number, since it uses as much as digits as its factorization.

1215060157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14639362.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1215060157 is about 34857.7130202198. The cubic root of 1215060157 is about 1067.0856019231.

Adding to 1215060157 its reverse (7510605121), we get a palindrome (8725665278).

The spelling of 1215060157 in words is "one billion, two hundred fifteen million, sixty thousand, one hundred fifty-seven".