157248445 has 4 divisors (see below), whose sum is σ = 188698140. Its totient is φ = 125798752.

The previous prime is 157248433. The next prime is 157248451. The reversal of 157248445 is 544842751.

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 125686521 + 31561924 = 11211^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 157248445 - 2¹³ = 157240253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157248398 and 157248407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15724840 + ... + 15724849.

It is an arithmetic number, because the mean of its divisors is an integer number (47174535).

Almost surely, 2^157248445 is an apocalyptic number.

It is an amenable number.

157248445 is a deficient number, since it is larger than the sum of its proper divisors (31449695).

157248445 is an equidigital number, since it uses as much as digits as its factorization.

157248445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31449694.

The product of its digits is 179200, while the sum is 40.

The square root of 157248445 is about 12539.8742019208. The cubic root of 157248445 is about 539.7534825860.

The spelling of 157248445 in words is "one hundred fifty-seven million, two hundred forty-eight thousand, four hundred forty-five".