1551142532 has 6 divisors (see below), whose sum is σ = 2714499438. Its totient is φ = 775571264.

The previous prime is 1551142531. The next prime is 1551142613. The reversal of 1551142532 is 2352411551.

It can be written as a sum of positive squares in only one way, i.e., 1335463936 + 215678596 = 36544^2 + 14686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1551142495 and 1551142504.

It is not an unprimeable number, because it can be changed into a prime (1551142531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193892813 + ... + 193892820.

It is an arithmetic number, because the mean of its divisors is an integer number (452416573).

Almost surely, 2^1551142532 is an apocalyptic number.

It is an amenable number.

1551142532 is a deficient number, since it is larger than the sum of its proper divisors (1163356906).

1551142532 is a wasteful number, since it uses less digits than its factorization.

1551142532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387785637 (or 387785635 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 1551142532 is about 39384.5468680293. The cubic root of 1551142532 is about 1157.5788114092.

The spelling of 1551142532 in words is "one billion, five hundred fifty-one million, one hundred forty-two thousand, five hundred thirty-two".