157391101 has 4 divisors (see below), whose sum is σ = 179875552. Its totient is φ = 134906652.

The previous prime is 157391089. The next prime is 157391119. The reversal of 157391101 is 101193751.

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: 101193751 = 4057 ⋅24943.

It is a cyclic number.

It is not a de Polignac number, because 157391101 - 2¹⁷ = 157260029 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 157391101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157391141) 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, 11242215 + ... + 11242228.

It is an arithmetic number, because the mean of its divisors is an integer number (44968888).

Almost surely, 2^157391101 is an apocalyptic number.

It is an amenable number.

157391101 is a deficient number, since it is larger than the sum of its proper divisors (22484451).

157391101 is an equidigital number, since it uses as much as digits as its factorization.

157391101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22484450.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 157391101 is about 12545.5610077828. The cubic root of 157391101 is about 539.9166549467.

The spelling of 157391101 in words is "one hundred fifty-seven million, three hundred ninety-one thousand, one hundred one".