1520022477 has 16 divisors (see below), whose sum is σ = 2146152960. Its totient is φ = 954259632.

The previous prime is 1520022467. The next prime is 1520022481. The reversal of 1520022477 is 7742200251.

It is not a de Polignac number, because 1520022477 - 2⁸ = 1520022221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520022467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70323 + ... + 89360.

It is an arithmetic number, because the mean of its divisors is an integer number (134134560).

Almost surely, 2^1520022477 is an apocalyptic number.

It is an amenable number.

1520022477 is a deficient number, since it is larger than the sum of its proper divisors (626130483).

1520022477 is a wasteful number, since it uses less digits than its factorization.

1520022477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159872.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 1520022477 is about 38987.4656396129. The cubic root of 1520022477 is about 1149.7850832154.

The spelling of 1520022477 in words is "one billion, five hundred twenty million, twenty-two thousand, four hundred seventy-seven".