157563001 has 4 divisors (see below), whose sum is σ = 158765904. Its totient is φ = 156360100.

The previous prime is 157562989. The next prime is 157563013. The reversal of 157563001 is 100365751.

It is the 5125-th star number.

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: 100365751 = 1297 ⋅77383.

It is an interprime number because it is at equal distance from previous prime (157562989) and next prime (157563013).

It is a cyclic number.

It is not a de Polignac number, because 157563001 - 2¹³ = 157554809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157563031) 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 3 ways as a sum of consecutive naturals, for example, 601255 + ... + 601516.

It is an arithmetic number, because the mean of its divisors is an integer number (39691476).

Almost surely, 2^157563001 is an apocalyptic number.

It is an amenable number.

157563001 is a deficient number, since it is larger than the sum of its proper divisors (1202903).

157563001 is a wasteful number, since it uses less digits than its factorization.

157563001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202902.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 157563001 is about 12552.4101669759. The cubic root of 157563001 is about 540.1131461582.

The spelling of 157563001 in words is "one hundred fifty-seven million, five hundred sixty-three thousand, one".