1551042073 has 16 divisors (see below), whose sum is σ = 1903336704. Its totient is φ = 1233630720.

The previous prime is 1551042041. The next prime is 1551042113. The reversal of 1551042073 is 3702401551.

It is a happy number.

It is not a de Polignac number, because 1551042073 - 2⁵ = 1551042041 is a prime.

It is a super-2 number, since 2×1551042073² = 4811463024432274658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551042173) 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, 83340 + ... + 100237.

It is an arithmetic number, because the mean of its divisors is an integer number (118958544).

Almost surely, 2^1551042073 is an apocalyptic number.

It is an amenable number.

1551042073 is a deficient number, since it is larger than the sum of its proper divisors (352294631).

1551042073 is a wasteful number, since it uses less digits than its factorization.

1551042073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183672.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1551042073 is about 39383.2714867620. The cubic root of 1551042073 is about 1157.5538208581.

The spelling of 1551042073 in words is "one billion, five hundred fifty-one million, forty-two thousand, seventy-three".