1577553252523 has 4 divisors (see below), whose sum is σ = 1579883464800. Its totient is φ = 1575223040248.

The previous prime is 1577553252497. The next prime is 1577553252547. The reversal of 1577553252523 is 3252523557751.

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

It is a cyclic number.

It is not a de Polignac number, because 1577553252523 - 2⁵ = 1577553252491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1577553252563) by changing a digit.

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, 1165105123 + ... + 1165106476.

It is an arithmetic number, because the mean of its divisors is an integer number (394970866200).

Almost surely, 2^{1577553252523} is an apocalyptic number.

1577553252523 is a deficient number, since it is larger than the sum of its proper divisors (2330212277).

1577553252523 is an equidigital number, since it uses as much as digits as its factorization.

1577553252523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330212276.

The product of its digits is 11025000, while the sum is 52.

The spelling of 1577553252523 in words is "one trillion, five hundred seventy-seven billion, five hundred fifty-three million, two hundred fifty-two thousand, five hundred twenty-three".