157649053 has 8 divisors (see below), whose sum is σ = 158828472. Its totient is φ = 156473856.

The previous prime is 157649029. The next prime is 157649069. The reversal of 157649053 is 350946751.

It can be written as a sum of positive squares in 4 ways, for example, as 76685049 + 80964004 = 8757^2 + 8998^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157649053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157648997 and 157649015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157649953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120901 + ... + 122197.

It is an arithmetic number, because the mean of its divisors is an integer number (19853559).

Almost surely, 2^157649053 is an apocalyptic number.

It is an amenable number.

157649053 is a deficient number, since it is larger than the sum of its proper divisors (1179419).

157649053 is a wasteful number, since it uses less digits than its factorization.

157649053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 157649053 is about 12555.8374073576. The cubic root of 157649053 is about 540.2114546815.

The spelling of 157649053 in words is "one hundred fifty-seven million, six hundred forty-nine thousand, fifty-three".