1201504157 has 12 divisors (see below), whose sum is σ = 1400848416. Its totient is φ = 1027517400.

The previous prime is 1201504141. The next prime is 1201504163. The reversal of 1201504157 is 7514051021.

It is not a de Polignac number, because 1201504157 - 2⁴ = 1201504141 is a prime.

It is a super-2 number, since 2×1201504157² = 2887224478576561298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201503157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5969 + ... + 49382.

It is an arithmetic number, because the mean of its divisors is an integer number (116737368).

Almost surely, 2^1201504157 is an apocalyptic number.

It is an amenable number.

1201504157 is a deficient number, since it is larger than the sum of its proper divisors (199344259).

1201504157 is an equidigital number, since it uses as much as digits as its factorization.

1201504157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55808 (or 55801 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1201504157 is about 34662.7199884833. The cubic root of 1201504157 is about 1063.1023852777.

Adding to 1201504157 its reverse (7514051021), we get a palindrome (8715555178).

The spelling of 1201504157 in words is "one billion, two hundred one million, five hundred four thousand, one hundred fifty-seven".