1501242051 has 4 divisors (see below), whose sum is σ = 2001656072. Its totient is φ = 1000828032.

The previous prime is 1501242031. The next prime is 1501242059. The reversal of 1501242051 is 1502421051.

1501242051 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1501242051 - 2⁷ = 1501241923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1501242059) 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, 250207006 + ... + 250207011.

It is an arithmetic number, because the mean of its divisors is an integer number (500414018).

Almost surely, 2^1501242051 is an apocalyptic number.

1501242051 is a deficient number, since it is larger than the sum of its proper divisors (500414021).

1501242051 is an equidigital number, since it uses as much as digits as its factorization.

1501242051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500414020.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1501242051 is about 38745.8649535663. The cubic root of 1501242051 is about 1145.0301094909.

The spelling of 1501242051 in words is "one billion, five hundred one million, two hundred forty-two thousand, fifty-one".