51201501 has 32 divisors (see below), whose sum is σ = 80559360. Its totient is φ = 28621824.

The previous prime is 51201499. The next prime is 51201503. The reversal of 51201501 is 10510215.

It is an interprime number because it is at equal distance from previous prime (51201499) and next prime (51201503).

It is not a de Polignac number, because 51201501 - 2¹ = 51201499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51201503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17896 + ... + 20558.

It is an arithmetic number, because the mean of its divisors is an integer number (2517480).

Almost surely, 2^51201501 is an apocalyptic number.

51201501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51201501 is a deficient number, since it is larger than the sum of its proper divisors (29357859).

51201501 is a wasteful number, since it uses less digits than its factorization.

51201501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 51201501 is about 7155.5224127942. The cubic root of 51201501 is about 371.3307353123.

Adding to 51201501 its reverse (10510215), we get a palindrome (61711716).

The spelling of 51201501 in words is "fifty-one million, two hundred one thousand, five hundred one".