157420853 has 4 divisors (see below), whose sum is σ = 161260428. Its totient is φ = 153581280.

The previous prime is 157420849. The next prime is 157420877. The reversal of 157420853 is 358024751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2244004 + 155176849 = 1498^2 + 12457^2 .

It is a cyclic number.

It is not a de Polignac number, because 157420853 - 2² = 157420849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157420253) 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, 1919726 + ... + 1919807.

It is an arithmetic number, because the mean of its divisors is an integer number (40315107).

Almost surely, 2^157420853 is an apocalyptic number.

It is an amenable number.

157420853 is a deficient number, since it is larger than the sum of its proper divisors (3839575).

157420853 is an equidigital number, since it uses as much as digits as its factorization.

157420853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839574.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 157420853 is about 12546.7467098049. The cubic root of 157420853 is about 539.9506733636.

The spelling of 157420853 in words is "one hundred fifty-seven million, four hundred twenty thousand, eight hundred fifty-three".