1251151532 has 6 divisors (see below), whose sum is σ = 2189515188. Its totient is φ = 625575764.

The previous prime is 1251151529. The next prime is 1251151547. The reversal of 1251151532 is 2351511521.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156393938 + ... + 156393945.

It is an arithmetic number, because the mean of its divisors is an integer number (364919198).

Almost surely, 2^1251151532 is an apocalyptic number.

It is an amenable number.

1251151532 is a deficient number, since it is larger than the sum of its proper divisors (938363656).

1251151532 is a wasteful number, since it uses less digits than its factorization.

1251151532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312787887 (or 312787885 counting only the distinct ones).

The product of its digits is 1500, while the sum is 26.

The square root of 1251151532 is about 35371.6204322053. The cubic root of 1251151532 is about 1077.5480302232.

The spelling of 1251151532 in words is "one billion, two hundred fifty-one million, one hundred fifty-one thousand, five hundred thirty-two".