102551520 has 48 divisors (see below), whose sum is σ = 323038800. Its totient is φ = 27346944.

The previous prime is 102551513. The next prime is 102551521. The reversal of 102551520 is 25155201.

It is a tau number, because it is divible by the number of its divisors (48).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102551521) 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, 106345 + ... + 107304.

It is an arithmetic number, because the mean of its divisors is an integer number (6729975).

Almost surely, 2^102551520 is an apocalyptic number.

102551520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102551520 is an abundant number, since it is smaller than the sum of its proper divisors (220487280).

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

102551520 is a wasteful number, since it uses less digits than its factorization.

102551520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213667 (or 213659 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 102551520 is about 10126.7724374551. The cubic root of 102551520 is about 468.0734781262.

The spelling of 102551520 in words is "one hundred two million, five hundred fifty-one thousand, five hundred twenty".