102151550 has 24 divisors (see below), whose sum is σ = 192844056. Its totient is φ = 40249440.

The previous prime is 102151537. The next prime is 102151559. The reversal of 102151550 is 55151201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102151559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11897 + ... + 18596.

It is an arithmetic number, because the mean of its divisors is an integer number (8035169).

Almost surely, 2^102151550 is an apocalyptic number.

102151550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102151550 is a deficient number, since it is larger than the sum of its proper divisors (90692506).

102151550 is a wasteful number, since it uses less digits than its factorization.

102151550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30572 (or 30567 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 102151550 is about 10107.0049965358. The cubic root of 102151550 is about 467.4641607498.

The spelling of 102151550 in words is "one hundred two million, one hundred fifty-one thousand, five hundred fifty".