1551479087 has 8 divisors (see below), whose sum is σ = 1589998080. Its totient is φ = 1513071000.

The previous prime is 1551479081. The next prime is 1551479089. The reversal of 1551479087 is 7809741551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551479087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551479081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962 + ... + 55712.

It is an arithmetic number, because the mean of its divisors is an integer number (198749760).

Almost surely, 2^1551479087 is an apocalyptic number.

1551479087 is a deficient number, since it is larger than the sum of its proper divisors (38518993).

1551479087 is an equidigital number, since it uses as much as digits as its factorization.

1551479087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55453.

The product of its (nonzero) digits is 352800, while the sum is 47.

The square root of 1551479087 is about 39388.8193146228. The cubic root of 1551479087 is about 1157.6625262099.

The spelling of 1551479087 in words is "one billion, five hundred fifty-one million, four hundred seventy-nine thousand, eighty-seven".