1551230457 has 16 divisors (see below), whose sum is σ = 2367894912. Its totient is φ = 884874240.

The previous prime is 1551230453. The next prime is 1551230459. The reversal of 1551230457 is 7540321551.

It is not a de Polignac number, because 1551230457 - 2² = 1551230453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1551230453) 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, 51894 + ... + 76127.

It is an arithmetic number, because the mean of its divisors is an integer number (147993432).

Almost surely, 2^1551230457 is an apocalyptic number.

It is an amenable number.

1551230457 is a deficient number, since it is larger than the sum of its proper divisors (816664455).

1551230457 is a wasteful number, since it uses less digits than its factorization.

1551230457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128608.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1551230457 is about 39385.6630895050. The cubic root of 1551230457 is about 1157.6006830709.

The spelling of 1551230457 in words is "one billion, five hundred fifty-one million, two hundred thirty thousand, four hundred fifty-seven".