151520663 has 4 divisors (see below), whose sum is σ = 173166480. Its totient is φ = 129874848.

The previous prime is 151520651. The next prime is 151520671. The reversal of 151520663 is 366025151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151520663 - 2²⁴ = 134743447 is a prime.

It is a super-2 number, since 2×151520663² = 45917022631919138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151520623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10822898 + ... + 10822911.

It is an arithmetic number, because the mean of its divisors is an integer number (43291620).

Almost surely, 2^151520663 is an apocalyptic number.

151520663 is a deficient number, since it is larger than the sum of its proper divisors (21645817).

151520663 is an equidigital number, since it uses as much as digits as its factorization.

151520663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21645816.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 151520663 is about 12309.3729734703. The cubic root of 151520663 is about 533.1187461809.

The spelling of 151520663 in words is "one hundred fifty-one million, five hundred twenty thousand, six hundred sixty-three".