65157500 has 60 divisors (see below), whose sum is σ = 144984840. Its totient is φ = 25608000.

The previous prime is 65157497. The next prime is 65157503. The reversal of 65157500 is 575156.

It is an interprime number because it is at equal distance from previous prime (65157497) and next prime (65157503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65157503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 167306 + ... + 167694.

It is an arithmetic number, because the mean of its divisors is an integer number (2416414).

Almost surely, 2^65157500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65157500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72492420).

65157500 is an abundant number, since it is smaller than the sum of its proper divisors (79827340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65157500 is a wasteful number, since it uses less digits than its factorization.

65157500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 65157500 is about 8072.0195738117. The cubic root of 65157500 is about 402.3970648393.

The spelling of 65157500 in words is "sixty-five million, one hundred fifty-seven thousand, five hundred".