1501001601 has 8 divisors (see below), whose sum is σ = 2183275104. Its totient is φ = 909697920.

The previous prime is 1501001599. The next prime is 1501001641. The reversal of 1501001601 is 1061001051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1501001601 - 2¹ = 1501001599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1501001641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22742416 + ... + 22742481.

It is an arithmetic number, because the mean of its divisors is an integer number (272909388).

Almost surely, 2^1501001601 is an apocalyptic number.

1501001601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1501001601 is a deficient number, since it is larger than the sum of its proper divisors (682273503).

1501001601 is a wasteful number, since it uses less digits than its factorization.

1501001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45484911.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1501001601 is about 38742.7619175505. The cubic root of 1501001601 is about 1144.9689740708.

Adding to 1501001601 its reverse (1061001051), we get a palindrome (2562002652).

The spelling of 1501001601 in words is "one billion, five hundred one million, one thousand, six hundred one".