2501547157 has 4 divisors (see below), whose sum is σ = 2503583820. Its totient is φ = 2499510496.

The previous prime is 2501547131. The next prime is 2501547199. The reversal of 2501547157 is 7517451052.

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 1989249201 + 512297956 = 44601^2 + 22634^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501547157 - 2¹⁹ = 2501022869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501547107) 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, 1016488 + ... + 1018945.

It is an arithmetic number, because the mean of its divisors is an integer number (625895955).

Almost surely, 2^2501547157 is an apocalyptic number.

It is an amenable number.

2501547157 is a deficient number, since it is larger than the sum of its proper divisors (2036663).

2501547157 is a wasteful number, since it uses less digits than its factorization.

2501547157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036662.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 2501547157 is about 50015.4691770456. The cubic root of 2501547157 is about 1357.4887259096.

The spelling of 2501547157 in words is "two billion, five hundred one million, five hundred forty-seven thousand, one hundred fifty-seven".